]> git.wh0rd.org - tt-rss.git/blobdiff - prefs.js
display active hotkey prefix on screen
[tt-rss.git] / prefs.js
index 4f315297ce5f9766635163729053d025f029581d..820c31eacccb56002873155d490f6cb4c4a20851 100644 (file)
--- a/prefs.js
+++ b/prefs.js
-var xmlhttp = false;
-
 var active_feed_cat = false;
-var active_label = false;
 var active_tab = false;
-var feed_to_expand = false;
-
-var xmlhttp = Ajax.getTransport();
 
 var init_params = new Array();
 
 var caller_subop = false;
 var sanity_check_done = false;
 var hotkey_prefix = false;
+var hotkey_prefix_pressed = false;
 
-function infobox_callback() {
-       if (xmlhttp.readyState == 4) {
-               infobox_callback2(xmlhttp);
-       }
-}
-
-function infobox_submit_callback() {
-       if (xmlhttp.readyState == 4) {
-               infobox_submit_callback2(xmlhttp);
-       }
-}
-
+var color_picker_active = false;
+var selection_disabled = false;
+var mouse_is_down = false;
 
-function replace_pubkey_callback() {
-       if (xmlhttp.readyState == 4) {
-               try {   
-                       var link = document.getElementById("pubGenAddress");
+function replace_pubkey_callback(transport) {
+       try {   
+               var link = $("pubGenAddress");
 
-                       if (xmlhttp.responseXML) {
+               if (transport.responseXML) {
 
-                               var new_link = xmlhttp.responseXML.getElementsByTagName("link")[0];
+                       var new_link = transport.responseXML.getElementsByTagName("link")[0];
 
-                               if (new_link) {
-                                       link.href = new_link.firstChild.nodeValue;
-                                       //link.innerHTML = new_link.firstChild.nodeValue;
+                       if (new_link) {
+                               link.href = new_link.firstChild.nodeValue;
+                               //link.innerHTML = new_link.firstChild.nodeValue;
 
-                                       new Effect.Highlight(link);
-
-                                       notify_info("Published feed URL changed.");
-                               } else {
-                                       notify_error("Could not change feed URL.");
-                               }
+                               new Effect.Highlight(link);
 
+                               notify_info("Published feed URL changed.");
                        } else {
                                notify_error("Could not change feed URL.");
                        }
-               } catch (e) {
-                       exception_error("replace_pubkey_callback", e);
-               }
-       }
-}
-
-function expand_feed_callback() {
-       if (xmlhttp.readyState == 4) {
-               try {   
-                       var container = document.getElementById("BRDET-" + feed_to_expand);     
-                       container.innerHTML=xmlhttp.responseText;
-//                     container.style.display = "block";
-                       Effect.Appear(container, {duration : 0.5});
-               } catch (e) {
-                       exception_error("expand_feed_callback", e);
-               }
-       }
-}
-
-function feedlist_callback() {
-       if (xmlhttp.readyState == 4) {
-               try {   
-                       var container = document.getElementById('prefContent'); 
-                       container.innerHTML=xmlhttp.responseText;
-                       selectTab("feedConfig", true);
-
-                       if (caller_subop) {
-                               var tuple = caller_subop.split(":");
-                               if (tuple[0] == 'editFeed') {
-                                       window.setTimeout('editFeed('+tuple[1]+')', 100);
-                               }                               
-
-                               caller_subop = false;
-                       }
-                       if (typeof correctPNG != 'undefined') {
-                               correctPNG();
-                       }
-                       notify("");
-                       remove_splash();
 
-               } catch (e) {
-                       exception_error("feedlist_callback", e);
+               } else {
+                       notify_error("Could not change feed URL.");
                }
+       } catch (e) {
+               exception_error("replace_pubkey_callback", e);
        }
 }
 
-/* stub for subscription dialog */
+function feedlist_callback2(transport) {
 
-function dlg_frefresh_callback(transport) {
+       try {   
 
-       try {
-               var container = document.getElementById('prefContent'); 
+               var container = $('prefContent');       
                container.innerHTML=transport.responseText;
                selectTab("feedConfig", true);
 
@@ -116,418 +59,400 @@ function dlg_frefresh_callback(transport) {
                        correctPNG();
                }
                notify("");
+               remove_splash();
+
        } catch (e) {
-               exception_error("feedlist_callback", e);
+               exception_error("feedlist_callback2", e);
        }
+}
+
+/* stub for subscription dialog */
 
+function dlg_frefresh_callback(transport) {
+       return feedlist_callback2(transport);
 }
 
-function filterlist_callback() {
-       var container = document.getElementById('prefContent');
-       if (xmlhttp.readyState == 4) {
-               container.innerHTML=xmlhttp.responseText;
-               if (typeof correctPNG != 'undefined') {
-                       correctPNG();
-               }
-               notify("");
-               remove_splash();
+function filterlist_callback2(transport) {
+       var container = $('prefContent');
+       container.innerHTML=transport.responseText;
+       if (typeof correctPNG != 'undefined') {
+               correctPNG();
        }
+       notify("");
+       remove_splash();
 }
 
-function labellist_callback() {
-       var container = document.getElementById('prefContent');
-       if (xmlhttp.readyState == 4) {
-               closeInfoBox();
-               container.innerHTML=xmlhttp.responseText;
-               if (active_label) {
-                       var row = document.getElementById("LILRR-" + active_label);
-                       if (row) {
-                               if (!row.className.match("Selected")) {
-                                       row.className = row.className + "Selected";
-                               }               
-                       }
-                       var checkbox = document.getElementById("LICHK-" + active_label);
-                       
-                       if (checkbox) {
-                               checkbox.checked = true;
+function init_label_inline_editor() {
+       try {
+               if ($("prefLabelList")) {
+                       var elems = $("prefLabelList").getElementsByTagName("SPAN");
+
+                       for (var i = 0; i < elems.length; i++) {
+                               if (elems[i].id && elems[i].id.match("LILT-")) {
+
+                                       var id = elems[i].id.replace("LILT-", "");
+
+                                       new Ajax.InPlaceEditor(elems[i],
+                                               'backend.php?op=pref-labels&subop=save&id=' + id,
+                                               {cols: 20, rows: 1});
+
+                               }
                        }
                }
-               if (typeof correctPNG != 'undefined') {
-                       correctPNG();
-               }
-               notify("");
-               remove_splash();
+
+       } catch (e) {
+               exception_error("init_label_inline_editor", e);
        }
 }
 
-function feed_browser_callback() {
-       var container = document.getElementById('prefContent');
-       if (xmlhttp.readyState == 4) {
-               container.innerHTML=xmlhttp.responseText;
-               notify("");
-               remove_splash();
+function labellist_callback2(transport) {
+
+       try {
+
+               var container = $('prefContent');
+                       closeInfoBox();
+                       container.innerHTML=transport.responseText;
+
+                       init_label_inline_editor();
+       
+                       if (typeof correctPNG != 'undefined') {
+                               correctPNG();
+                       }
+                       notify("");
+                       remove_splash();
+
+       } catch (e) {
+               exception_error("labellist_callback2", e);
        }
 }
 
-function userlist_callback() {
-       var container = document.getElementById('prefContent');
-       if (xmlhttp.readyState == 4) {
-               container.innerHTML=xmlhttp.responseText;
-               notify("");
-               remove_splash();
+function userlist_callback2(transport) {
+       try {
+               var container = $('prefContent');
+               if (transport.readyState == 4) {
+                       container.innerHTML=transport.responseText;
+                       notify("");
+                       remove_splash();
+               }
+       } catch (e) {
+               exception_error("userlist_callback2", e);
        }
 }
 
-function prefslist_callback() {
-       var container = document.getElementById('prefContent');
-       if (xmlhttp.readyState == 4) {
-               container.innerHTML=xmlhttp.responseText;
+function prefslist_callback2(transport) {
+       try {
+               var container = $('prefContent');
+               container.innerHTML=transport.responseText;
                notify("");
                remove_splash();
+       } catch (e) {
+               exception_error("prefslist_callback2", e);
        }
 }
 
-function gethelp_callback() {
-       var container = document.getElementById('prefHelpBox');
-       if (xmlhttp.readyState == 4) {
-
-               container.innerHTML = xmlhttp.responseText;
-               container.style.display = "block";
-
-       }
-}
-
-function notify_callback() {
-       if (xmlhttp.readyState == 4) {
-               notify_info(xmlhttp.responseText);
-       } 
+function notify_callback2(transport) {
+       notify_info(transport.responseText);     
 }
 
-function prefs_reset_callback() {
-       if (xmlhttp.readyState == 4) {
-               notify_info(xmlhttp.responseText);
+function prefs_reset_callback2(transport) {
+       try {
+               notify_info(transport.responseText);
                selectTab();
-       } 
+       } catch (e) {
+               exception_error("prefs_reset_callback2", e);
+       }
 }
 
 
-function changepass_callback() {
+function changepass_callback2(transport) {
        try {
-               if (xmlhttp.readyState == 4) {
        
-                       if (xmlhttp.responseText.indexOf("ERROR: ") == 0) {
-                               notify_error(xmlhttp.responseText.replace("ERROR: ", ""));
+                       if (transport.responseText.indexOf("ERROR: ") == 0) {
+                               notify_error(transport.responseText.replace("ERROR: ", ""));
                        } else {
-                               notify_info(xmlhttp.responseText);
-                               var warn = document.getElementById("default_pass_warning");
+                               notify_info(transport.responseText);
+                               var warn = $("default_pass_warning");
                                if (warn) warn.style.display = "none";
                        }
        
                        document.forms['change_pass_form'].reset();
 
-               } 
        } catch (e) {
-               exception_error("changepass_callback", e);
+               exception_error("changepass_callback2", e);
        }
 }
 
-function infobox_feed_cat_callback() {
-       if (xmlhttp.readyState == 4) {
-               try {
-
-                       infobox_callback();
-
-                       if (document.getElementById("prefFeedCatList")) {
-                               var elems = document.getElementById("prefFeedCatList").getElementsByTagName("SPAN");
+function init_cat_inline_editor() {
+       try {
 
-                               for (var i = 0; i < elems.length; i++) {
-                                       if (elems[i].id && elems[i].id.match("FCATT-")) {
-                                               var cat_id = elems[i].id.replace("FCATT-", "");
+               if ($("prefFeedCatList")) {
+                       var elems = $("prefFeedCatList").getElementsByTagName("SPAN");
 
+                       for (var i = 0; i < elems.length; i++) {
+                               if (elems[i].id && elems[i].id.match("FCATT-")) {
+                                       var cat_id = elems[i].id.replace("FCATT-", "");
                                                new Ajax.InPlaceEditor(elems[i],
-                                                       'backend.php?op=pref-feeds&subop=editCats&action=save&cid=' + cat_id);
-                                       }
+                                               'backend.php?op=pref-feeds&subop=editCats&action=save&cid=' + cat_id);
                                }
                        }
-
-               } catch (e) {
-                       exception_error("infobox_feed_cat_callback", e);
                }
+
+       } catch (e) {
+               exception_error("init_cat_inline_editor", e);
+       }
+}
+
+function infobox_feed_cat_callback2(transport) {
+       try {
+               infobox_callback2(transport);
+               init_cat_inline_editor();
+       } catch (e) {
+               exception_error("infobox_feed_cat_callback2", e);
        }
 }
 
 function updateFeedList(sort_key) {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
+       try {
 
-       var feed_search = document.getElementById("feed_search");
+       var feed_search = $("feed_search");
        var search = "";
        if (feed_search) { search = feed_search.value; }
 
-       var slat = document.getElementById("show_last_article_times");
+       var slat = $("show_last_article_times");
 
        var slat_checked = false;
        if (slat) {
                slat_checked = slat.checked;
        }
 
-       xmlhttp.open("GET", "backend.php?op=pref-feeds" +
+       var query = "backend.php?op=pref-feeds" +
                "&sort=" + param_escape(sort_key) + 
                "&slat=" + param_escape(slat_checked) +
-               "&search=" + param_escape(search), true);
-       xmlhttp.onreadystatechange=feedlist_callback;
-       xmlhttp.send(null);
+               "&search=" + param_escape(search);
 
+       new Ajax.Request(query, {
+               onComplete: function(transport) { 
+                       feedlist_callback2(transport); 
+               } });
+       } catch (e) {
+               exception_error("updateFeedList", e);
+       }
 }
 
 function updateUsersList(sort_key) {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
-       var user_search = document.getElementById("user_search");
-       var search = "";
-       if (user_search) { search = user_search.value; }
+       try {
 
-       xmlhttp.open("GET", "backend.php?op=pref-users&sort="
-               + param_escape(sort_key) +
-               "&search=" + param_escape(search), true);
-       xmlhttp.onreadystatechange=userlist_callback;
-       xmlhttp.send(null);
+               var user_search = $("user_search");
+               var search = "";
+               if (user_search) { search = user_search.value; }
+       
+               var query = "backend.php?op=pref-users&sort="
+                       + param_escape(sort_key) +
+                       "&search=" + param_escape(search);
+       
+               new Ajax.Request(query, {
+                       onComplete: function(transport) { 
+                               userlist_callback2(transport); 
+                       } });
 
+       } catch (e) {
+               exception_error("updateUsersList", e);
+       }
 }
 
 function addLabel() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
-       var form = document.forms['label_edit_form'];
-
-       var sql_exp = form.sql_exp.value;
-       var description = form.description.value;
+       try {
 
-       if (sql_exp == "") {
-               alert(__("Can't create label: missing SQL expression."));
-               return false;
-       }
+               var caption = prompt(__("Please enter label caption:"), "");
+       
+               if (caption == null) { 
+                       return false;
+               }
+       
+               if (caption == "") {
+                       alert(__("Can't create label: missing caption."));
+                       return false;
+               }
+       
+               // we can be called from some other tab
+               active_tab = "labelConfig";
+       
+               query = "backend.php?op=pref-labels&subop=add&caption=" + 
+                       param_escape(caption);
+       
+               new Ajax.Request(query, {
+                       onComplete: function(transport) {
+                                       infobox_submit_callback2(transport);
+                               } });
 
-       if (description == "") {
-               alert(__("Can't create label: missing caption."));
-               return false;
+       } catch (e) {
+               exception_error("addLabel", e);
        }
-
-       var query = Form.serialize("label_edit_form");
-
-       // we can be called from some other tab
-       active_tab = "labelConfig";
-
-       xmlhttp.open("GET", "backend.php?op=pref-labels&subop=add&" + query, true);                     
-       xmlhttp.onreadystatechange=infobox_submit_callback;
-       xmlhttp.send(null);
 }
 
 function addFeed() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
-       var link = document.getElementById("fadd_link");
-
-       if (link.value.length == 0) {
-               alert(__("Error: No feed URL given."));
-       } else if (!isValidURL(link.value)) {
-               alert(__("Error: Invalid feed URL."));
-       } else {
-               notify_progress("Adding feed...");
-
-               xmlhttp.open("GET", "backend.php?op=pref-feeds&subop=add&from=tt-rss&feed_url=" +
-                       param_escape(link.value), true);
-               xmlhttp.onreadystatechange=feedlist_callback;
-               xmlhttp.send(null);
+       try {
 
-               link.value = "";
+               var link = $("fadd_link");
+       
+               if (link.value.length == 0) {
+                       alert(__("Error: No feed URL given."));
+               } else if (!isValidURL(link.value)) {
+                       alert(__("Error: Invalid feed URL."));
+               } else {
+                       notify_progress("Adding feed...");
+       
+                       var query = "backend.php?op=pref-feeds&subop=add&from=tt-rss&feed_url=" +
+                               param_escape(link.value);
+       
+                       new Ajax.Request(query, {
+                               onComplete: function(transport) {
+                                               feedlist_callback2(transport);
+                                       } });
+       
+                       link.value = "";
+       
+               }
 
+       } catch (e) {
+               exception_error("addFeed", e);
        }
 
 }
 
 function addFeedCat() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
-       var cat = document.getElementById("fadd_cat");
+       var cat = $("fadd_cat");
 
        if (cat.value.length == 0) {
                alert(__("Can't add category: no name specified."));
        } else {
                notify_progress("Adding feed category...");
 
-               xmlhttp.open("GET", "backend.php?op=pref-feeds&subop=editCats&action=add&cat=" +
-                       param_escape(cat.value), true);
-               xmlhttp.onreadystatechange=infobox_callback;
-               xmlhttp.send(null);
+               var query = "backend.php?op=pref-feeds&subop=editCats&action=add&cat=" +
+                       param_escape(cat.value);
+
+               new Ajax.Request(query, {
+                       onComplete: function(transport) {
+                                       infobox_feed_cat_callback2(transport);
+                               } });
 
                link.value = "";
 
        }
-
 }
-function addUser() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
+function addUser() {
 
-       var sqlexp = document.getElementById("uadd_box");
+       try {
 
-       if (sqlexp.value.length == 0) {
-               alert(__("Can't add user: no login specified."));
-       } else {
+               var login = prompt(__("Please enter login:"), "");
+       
+               if (login == null) { 
+                       return false;
+               }
+       
+               if (login == "") {
+                       alert(__("Can't create user: no login specified."));
+                       return false;
+               }
+       
                notify_progress("Adding user...");
+       
+               var query = "backend.php?op=pref-users&subop=add&login=" +
+                       param_escape(login);
+                               
+               new Ajax.Request(query, {
+                       onComplete: function(transport) { 
+                               userlist_callback2(transport); 
+                       } });
 
-               xmlhttp.open("GET", "backend.php?op=pref-users&subop=add&login=" +
-                       param_escape(sqlexp.value), true);                      
-                       
-               xmlhttp.onreadystatechange=userlist_callback;
-               xmlhttp.send(null);
-
-               sqlexp.value = "";
+       } catch (e) {
+               exception_error("addUser", e);
        }
-
 }
 
-function editLabel(id) {
-
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
-       disableHotkeys();
+function editUser(id) {
 
-       notify_progress("Loading, please wait...");
+       try {
 
-//     document.getElementById("label_create_btn").disabled = true;
+               disableHotkeys();
 
-       active_label = id;
+               notify_progress("Loading, please wait...");
 
-       selectTableRowsByIdPrefix('prefLabelList', 'LILRR-', 'LICHK-', false);
-       selectTableRowById('LILRR-'+id, 'LICHK-'+id, true);
+               selectTableRowsByIdPrefix('prefUserList', 'UMRR-', 'UMCHK-', false);
+               selectTableRowById('UMRR-'+id, 'UMCHK-'+id, true);
 
-       xmlhttp.open("GET", "backend.php?op=pref-labels&subop=edit&id=" +
-               param_escape(id), true);
-       xmlhttp.onreadystatechange=infobox_callback;
-       xmlhttp.send(null);
+               disableContainerChildren("userOpToolbar", false);
 
-}
+               var query = "backend.php?op=pref-users&subop=edit&id=" +
+                       param_escape(id);
 
-function editUser(id) {
+               new Ajax.Request(query, {
+                       onComplete: function(transport) {
+                                       infobox_callback2(transport);
+                               } });
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
+       } catch (e) {
+               exception_error("editUser", e);
        }
-
-       disableHotkeys();
-
-       notify_progress("Loading, please wait...");
-
-       selectTableRowsByIdPrefix('prefUserList', 'UMRR-', 'UMCHK-', false);
-       selectTableRowById('UMRR-'+id, 'UMCHK-'+id, true);
-
-       xmlhttp.open("GET", "backend.php?op=pref-users&subop=edit&id=" +
-               param_escape(id), true);
-       xmlhttp.onreadystatechange=infobox_callback;
-       xmlhttp.send(null);
-
+               
 }
 
 function editFilter(id) {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
-       disableHotkeys();
-
-       notify_progress("Loading, please wait...");
+       try {
 
-//     document.getElementById("create_filter_btn").disabled = true;
+               disableHotkeys();
 
-       selectTableRowsByIdPrefix('prefFilterList', 'FILRR-', 'FICHK-', false);
-       selectTableRowById('FILRR-'+id, 'FICHK-'+id, true);
+               notify_progress("Loading, please wait...");
 
-       xmlhttp.open("GET", "backend.php?op=pref-filters&subop=edit&id=" + param_escape(id), true);
-       xmlhttp.onreadystatechange=infobox_callback;
-       xmlhttp.send(null);
-}
+               disableContainerChildren("filterOpToolbar", false);
 
-function editFeed(feed) {
+               selectTableRowsByIdPrefix('prefFilterList', 'FILRR-', 'FICHK-', false);
+               selectTableRowById('FILRR-'+id, 'FICHK-'+id, true);
 
-//     notify("Editing feed...");
+               var query = "backend.php?op=pref-filters&subop=edit&id=" + 
+                       param_escape(id);
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
+               new Ajax.Request(query, {
+                       onComplete: function(transport) {
+                                       infobox_callback2(transport);
+                               } });
+       } catch (e) {
+               exception_error("editFilter", e);
        }
+}
 
-       disableHotkeys();
-
-       notify_progress("Loading, please wait...");
-
-/*     document.getElementById("subscribe_to_feed_btn").disabled = true;
+function editFeed(feed) {
 
        try {
-               document.getElementById("top25_feeds_btn").disabled = true;
-       } catch (e) {
-               // this button is not always available, no-op if not found
-       } */
-
-       // clean selection from all rows & select row being edited
-       selectTableRowsByIdPrefix('prefFeedList', 'FEEDR-', 'FRCHK-', false);
-       selectTableRowById('FEEDR-'+feed, 'FRCHK-'+feed, true);
-
-       xmlhttp.open("GET", "backend.php?op=pref-feeds&subop=editfeed&id=" +
-               param_escape(feed), true);
-
-       xmlhttp.onreadystatechange=infobox_callback;
-       xmlhttp.send(null);
-
-}
 
-function editFeedCat(cat) {
+               disableHotkeys();
+       
+               notify_progress("Loading, please wait...");
+       
+               // clean selection from all rows & select row being edited
+               selectTableRowsByIdPrefix('prefFeedList', 'FEEDR-', 'FRCHK-', false);
+               selectTableRowById('FEEDR-'+feed, 'FRCHK-'+feed, true);
+       
+               disableContainerChildren("feedOpToolbar", false);
+       
+               var query = "backend.php?op=pref-feeds&subop=editfeed&id=" +
+                       param_escape(feed);
+       
+               new Ajax.Request(query, {
+                       onComplete: function(transport) {
+                                       infobox_callback2(transport);
+                               } });
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
+       } catch (e) {
+               exception_error("editFeed", e);
        }
-
-       disableHotkeys();
-
-       notify_progress("Loading, please wait...");
-
-       active_feed_cat = cat;
-
-       xmlhttp.open("GET", "backend.php?op=pref-feeds&subop=editCats&action=edit&id=" +
-               param_escape(cat), true);
-       xmlhttp.onreadystatechange=infobox_callback;
-       xmlhttp.send(null);
-
 }
 
 function getSelectedLabels() {
@@ -550,36 +475,9 @@ function getSelectedFeedCats() {
        return getSelectedTableRowIds("prefFeedCatList", "FCATR");
 }
 
-function getSelectedFeedsFromBrowser() {
-
-       var list = document.getElementById("browseFeedList");
-       if (!list) list = document.getElementById("browseBigFeedList");
-
-       var selected = new Array();
-       
-       for (i = 0; i < list.childNodes.length; i++) {
-               var child = list.childNodes[i];
-               if (child.id && child.id.match("FBROW-")) {
-                       var id = child.id.replace("FBROW-", "");
-                       
-                       var cb = document.getElementById("FBCHK-" + id);
-
-                       if (cb.checked) {
-                               selected.push(id);
-                       }
-               }
-       }
-
-       return selected;
-}
 
 function removeSelectedLabels() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
        var sel_rows = getSelectedLabels();
 
        if (sel_rows.length > 0) {
@@ -589,10 +487,14 @@ function removeSelectedLabels() {
                if (ok) {
                        notify_progress("Removing selected labels...");
        
-                       xmlhttp.open("GET", "backend.php?op=pref-labels&subop=remove&ids="+
-                               param_escape(sel_rows.toString()), true);
-                       xmlhttp.onreadystatechange=labellist_callback;
-                       xmlhttp.send(null);
+                       var query = "backend.php?op=pref-labels&subop=remove&ids="+
+                               param_escape(sel_rows.toString());
+
+                       new Ajax.Request(query, {
+                               onComplete: function(transport) {
+                                               labellist_callback2(transport);
+                                       } });
+
                }
        } else {
                alert(__("No labels are selected."));
@@ -603,28 +505,33 @@ function removeSelectedLabels() {
 
 function removeSelectedUsers() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
-       var sel_rows = getSelectedUsers();
-
-       if (sel_rows.length > 0) {
-
-               var ok = confirm(__("Remove selected users?"));
+       try {
 
-               if (ok) {
-                       notify_progress("Removing selected users...");
+               var sel_rows = getSelectedUsers();
+       
+               if (sel_rows.length > 0) {
+       
+                       var ok = confirm(__("Remove selected users?"));
+       
+                       if (ok) {
+                               notify_progress("Removing selected users...");
+               
+                               var query = "backend.php?op=pref-users&subop=remove&ids="+
+                                       param_escape(sel_rows.toString());
+       
+                               new Ajax.Request(query, {
+                                       onComplete: function(transport) { 
+                                               userlist_callback2(transport); 
+                                       } });
        
-                       xmlhttp.open("GET", "backend.php?op=pref-users&subop=remove&ids="+
-                               param_escape(sel_rows.toString()), true);
-                       xmlhttp.onreadystatechange=userlist_callback;
-                       xmlhttp.send(null);
+                       }
+       
+               } else {
+                       alert(__("No users are selected."));
                }
 
-       } else {
-               alert(__("No users are selected."));
+       } catch (e) {
+               exception_error("removeSelectedUsers", e);
        }
 
        return false;
@@ -632,27 +539,32 @@ function removeSelectedUsers() {
 
 function removeSelectedFilters() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
-       var sel_rows = getSelectedFilters();
-
-       if (sel_rows.length > 0) {
-
-               var ok = confirm(__("Remove selected filters?"));
+       try {
 
-               if (ok) {
-                       notify_progress("Removing selected filters...");
+               var sel_rows = getSelectedFilters();
+       
+               if (sel_rows.length > 0) {
+       
+                       var ok = confirm(__("Remove selected filters?"));
+       
+                       if (ok) {
+                               notify_progress("Removing selected filters...");
+               
+                               var query = "backend.php?op=pref-filters&subop=remove&ids="+
+                                       param_escape(sel_rows.toString());
        
-                       xmlhttp.open("GET", "backend.php?op=pref-filters&subop=remove&ids="+
-                               param_escape(sel_rows.toString()), true);
-                       xmlhttp.onreadystatechange=filterlist_callback;
-                       xmlhttp.send(null);
+                               new Ajax.Request(query, {
+                                               onComplete: function(transport) {
+                                                               filterlist_callback2(transport);
+                                       } });
+       
+                       }
+               } else {
+                       alert(__("No filters are selected."));
                }
-       } else {
-               alert(__("No filters are selected."));
+
+       } catch (e) {
+               exception_error("removeSelectedFilters", e);
        }
 
        return false;
@@ -661,31 +573,33 @@ function removeSelectedFilters() {
 
 function removeSelectedFeeds() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
-       var sel_rows = getSelectedFeeds();
-
-       if (sel_rows.length > 0) {
-
-               var ok = confirm(__("Unsubscribe from selected feeds?"));
-
-               if (ok) {
+       try {
 
-                       notify_progress("Unsubscribing from selected feeds...");
+               var sel_rows = getSelectedFeeds();
+       
+               if (sel_rows.length > 0) {
+       
+                       var ok = confirm(__("Unsubscribe from selected feeds?"));
+       
+                       if (ok) {
+       
+                               notify_progress("Unsubscribing from selected feeds...");
+               
+                               var query = "backend.php?op=pref-feeds&subop=remove&ids="+
+                                       param_escape(sel_rows.toString());
+       
+                               new Ajax.Request(query, {
+                                       onComplete: function(transport) {
+                                                       feedlist_callback2(transport);
+                                               } });
+                       }
        
-                       xmlhttp.open("GET", "backend.php?op=pref-feeds&subop=remove&ids="+
-                               param_escape(sel_rows.toString()), true);
-                       xmlhttp.onreadystatechange=feedlist_callback;
-                       xmlhttp.send(null);
+               } else {
+                       alert(__("No feeds are selected."));
                }
 
-       } else {
-
-               alert(__("No feeds are selected."));
-
+       } catch (e) {
+               exception_error("removeSelectedFeeds", e);
        }
        
        return false;
@@ -693,11 +607,6 @@ function removeSelectedFeeds() {
 
 function clearSelectedFeeds() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
        var sel_rows = getSelectedFeeds();
 
        if (sel_rows.length > 1) {
@@ -725,11 +634,6 @@ function clearSelectedFeeds() {
 
 function purgeSelectedFeeds() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
        var sel_rows = getSelectedFeeds();
 
        if (sel_rows.length > 0) {
@@ -761,11 +665,6 @@ function purgeSelectedFeeds() {
 
 function removeSelectedFeedCats() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
        var sel_rows = getSelectedFeedCats();
 
        if (sel_rows.length > 0) {
@@ -775,10 +674,14 @@ function removeSelectedFeedCats() {
                if (ok) {
                        notify_progress("Removing selected categories...");
        
-                       xmlhttp.open("GET", "backend.php?op=pref-feeds&subop=editCats&action=remove&ids="+
-                               param_escape(sel_rows.toString()), true);
-                       xmlhttp.onreadystatechange=infobox_callback;
-                       xmlhttp.send(null);
+                       var query = "backend.php?op=pref-feeds&subop=editCats&action=remove&ids="+
+                               param_escape(sel_rows.toString());
+
+                       new Ajax.Request(query, {
+                               onComplete: function(transport) {
+                                       infobox_feed_cat_callback2(transport);
+                               } });
+
                }
 
        } else {
@@ -792,14 +695,9 @@ function removeSelectedFeedCats() {
 
 function feedEditCancel() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
        try {
-               document.getElementById("subscribe_to_feed_btn").disabled = false;
-               document.getElementById("top25_feeds_btn").disabled = false;
+               $("subscribe_to_feed_btn").disabled = false;
+               $("top25_feeds_btn").disabled = false;
        } catch (e) {
                // this button is not always available, no-op if not found
        }
@@ -811,43 +709,21 @@ function feedEditCancel() {
        return false;
 }
 
-function feedCatEditCancel() {
-
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
-       active_feed_cat = false;
-
-//     notify("Operation cancelled.");
-
-       xmlhttp.open("GET", "backend.php?op=pref-feeds&subop=editCats", true);
-       xmlhttp.onreadystatechange=infobox_callback;
-       xmlhttp.send(null);
-
-       return false;
-}
-
 function feedEditSave() {
 
        try {
        
-               if (!xmlhttp_ready(xmlhttp)) {
-                       printLockingError();
-                       return
-               }
-
                // FIXME: add parameter validation
 
                var query = Form.serialize("edit_feed_form");
 
                notify_progress("Saving feed...");
 
-               xmlhttp.open("POST", "backend.php", true);
-               xmlhttp.onreadystatechange=feedlist_callback;
-               xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
-               xmlhttp.send(query);
+               new Ajax.Request("backend.php", {
+                       parameters: query,
+                       onComplete: function(transport) { 
+                               feedlist_callback2(transport); 
+                       } });
 
                closeInfoBox();
 
@@ -858,52 +734,8 @@ function feedEditSave() {
        } 
 }
 
-function feedCatEditSave() {
-
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
-       notify_progress("Saving category...");
-
-       var query = Form.serialize("feed_cat_edit_form");
-
-       xmlhttp.open("GET", "backend.php?" + query, true);
-       xmlhttp.onreadystatechange=infobox_callback;
-       xmlhttp.send(null);
-
-       active_feed_cat = false;
-
-       return false;
-}
-
-function labelEditCancel() {
-
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
-       try {
-               document.getElementById("label_create_btn").disabled = false;
-               selectPrefRows('label', false); // cleanup feed selection
-       } catch (e) { }
-
-       active_label = false;
-
-       closeInfoBox();
-
-       return false;
-}
-
 function userEditCancel() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
        selectPrefRows('user', false); // cleanup feed selection
        closeInfoBox();
 
@@ -912,13 +744,8 @@ function userEditCancel() {
 
 function filterEditCancel() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
        try {
-               document.getElementById("create_filter_btn").disabled = false;
+               $("create_filter_btn").disabled = false;
                selectPrefRows('filter', false); // cleanup feed selection
        } catch (e) { }
 
@@ -927,123 +754,62 @@ function filterEditCancel() {
        return false;
 }
 
-function labelEditSave() {
-
-       var label = active_label;
-
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
+function userEditSave() {
 
-/*     if (!is_opera()) {
+       try {
 
-               var sql_exp = document.forms["label_edit_form"].sql_exp.value;
-               var description = document.forms["label_edit_form"].description.value;
+               var login = document.forms["user_edit_form"].login.value;
        
-               if (sql_exp.length == 0) {
-                       alert("SQL Expression cannot be blank.");
-                       return false;
+               if (login.length == 0) {
+                       alert(__("Login field cannot be blank."));
+                       return;
                }
+               
+               notify_progress("Saving user...");
        
-               if (description.length == 0) {
-                       alert("Caption field cannot be blank.");
-                       return false;
-               }
-       } */
-
-       closeInfoBox();
-
-       notify_progress("Saving label...");
-
-       active_label = false;
-
-       query = Form.serialize("label_edit_form");
-
-       xmlhttp.open("GET", "backend.php?" + query, true);              
-       xmlhttp.onreadystatechange=labellist_callback;
-       xmlhttp.send(null);
-
-       return false;
-}
-
-function userEditSave() {
-
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
-       var login = document.forms["user_edit_form"].login.value;
-
-       if (login.length == 0) {
-               alert(__("Login field cannot be blank."));
-               return;
-       }
+               closeInfoBox();
        
-       notify_progress("Saving user...");
-
-       closeInfoBox();
-
-       var query = Form.serialize("user_edit_form");
+               var query = Form.serialize("user_edit_form");
+               
+               new Ajax.Request("backend.php", {
+                       parameters: query,
+                       onComplete: function(transport) { 
+                               userlist_callback2(transport); 
+                       } });
        
-       xmlhttp.open("GET", "backend.php?" + query, true);                      
-       xmlhttp.onreadystatechange=userlist_callback;
-       xmlhttp.send(null);
+       } catch (e) {
+               exception_error("userEditSave", e);
+       }
 
        return false;
+
 }
 
 
 function filterEditSave() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
+       try {
 
-/*     if (!is_opera()) {
-               var reg_exp = document.forms["filter_edit_form"].reg_exp.value;
+               notify_progress("Saving filter...");
        
-               if (reg_exp.length == 0) {
-                       alert("Filter expression field cannot be blank.");
-                       return;
-               }
-       } */
-
-       notify_progress("Saving filter...");
-
-       var query = Form.serialize("filter_edit_form");
-
-       closeInfoBox();
+               var query = "backend.php?" + Form.serialize("filter_edit_form");
+       
+               closeInfoBox();
+       
+               $("create_filter_btn").disabled = false;
 
-       document.getElementById("create_filter_btn").disabled = false;
+               new Ajax.Request(query, {
+                               onComplete: function(transport) {
+                                               filterlist_callback2(transport);
+                       } });
 
-       xmlhttp.open("GET", "backend.php?" + query, true);
-       xmlhttp.onreadystatechange=filterlist_callback;
-       xmlhttp.send(null);
+       } catch (e) {
+               exception_error("filterEditSave", e);
+       }
 
        return false;
 }
 
-function editSelectedLabel() {
-       var rows = getSelectedLabels();
-
-       if (rows.length == 0) {
-               alert(__("No labels are selected."));
-               return;
-       }
-
-       if (rows.length > 1) {
-               alert(__("Please select only one label."));
-               return;
-       }
-
-       notify("");
-
-       editLabel(rows[0]);
-
-}
 
 function editSelectedUser() {
        var rows = getSelectedUsers();
@@ -1064,90 +830,74 @@ function editSelectedUser() {
 }
 
 function resetSelectedUserPass() {
-       var rows = getSelectedUsers();
-
-       if (rows.length == 0) {
-               alert(__("No users are selected."));
-               return;
-       }
-
-       if (rows.length > 1) {
-               alert(__("Please select only one user."));
-               return;
-       }
 
-       var ok = confirm(__("Reset password of selected user?"));
+       try {
 
-       if (ok) {
-               notify_progress("Resetting password for selected user...");
+               var rows = getSelectedUsers();
        
-               var id = rows[0];
+               if (rows.length == 0) {
+                       alert(__("No users are selected."));
+                       return;
+               }
        
-               xmlhttp.open("GET", "backend.php?op=pref-users&subop=resetPass&id=" +
-                       param_escape(id), true);
-               xmlhttp.onreadystatechange=userlist_callback;
-               xmlhttp.send(null);
+               if (rows.length > 1) {
+                       alert(__("Please select only one user."));
+                       return;
+               }
+       
+               var ok = confirm(__("Reset password of selected user?"));
+       
+               if (ok) {
+                       notify_progress("Resetting password for selected user...");
+               
+                       var id = rows[0];
+               
+                       var query = "backend.php?op=pref-users&subop=resetPass&id=" +
+                               param_escape(id);
+       
+                       new Ajax.Request(query, {
+                               onComplete: function(transport) { 
+                                       userlist_callback2(transport); 
+                               } });
+       
+               }
+
+       } catch (e) {
+               exception_error("resetSelectedUserPass", e);
        }
 }
 
 function selectedUserDetails() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
-       var rows = getSelectedUsers();
+       try {
 
-       if (rows.length == 0) {
-               alert(__("No users are selected."));
-               return;
-       }
+               var rows = getSelectedUsers();
+       
+               if (rows.length == 0) {
+                       alert(__("No users are selected."));
+                       return;
+               }
+       
+               if (rows.length > 1) {
+                       alert(__("Please select only one user."));
+                       return;
+               }
+       
+               notify_progress("Loading, please wait...");
+       
+               var id = rows[0];
+       
+               var query = "backend.php?op=pref-users&subop=user-details&id=" + id;
 
-       if (rows.length > 1) {
-               alert(__("Please select only one user."));
-               return;
+               new Ajax.Request(query, {
+                       onComplete: function(transport) {
+                                       infobox_callback2(transport);
+                               } });
+       } catch (e) {
+               exception_error("selectedUserDetails", e);
        }
-
-       notify_progress("Loading, please wait...");
-
-       var id = rows[0];
-
-       xmlhttp.open("GET", "backend.php?op=user-details&id=" + id, true);
-       xmlhttp.onreadystatechange=infobox_callback;
-       xmlhttp.send(null);
-
 }
 
-function selectedFeedDetails() {
-
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
-       var rows = getSelectedFeeds();
-
-       if (rows.length == 0) {
-               alert(__("No feeds are selected."));
-               return;
-       }
-
-       if (rows.length > 1) {
-               alert(__("Please select only one feed."));
-               return;
-       }
-
-//     var id = rows[0];
-
-       notify("");
-
-       xmlhttp.open("GET", "backend.php?op=feed-details&id=" + 
-               param_escape(rows.toString()), true);
-       xmlhttp.onreadystatechange=infobox_callback;
-       xmlhttp.send(null);
-
-}
 
 function editSelectedFilter() {
        var rows = getSelectedFilters();
@@ -1190,55 +940,37 @@ function editSelectedFeed() {
 
 function editSelectedFeeds() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
-       var rows = getSelectedFeeds();
-
-       if (rows.length == 0) {
-               alert(__("No feeds are selected."));
-               return;
-       }
-
-       notify("");
-
-       disableHotkeys();
-
-       notify_progress("Loading, please wait...");
-
-       xmlhttp.open("GET", "backend.php?op=pref-feeds&subop=editfeeds&ids=" +
-               param_escape(rows.toString()), true);
-
-       xmlhttp.onreadystatechange=infobox_callback;
-       xmlhttp.send(null);
-
-}
-
-function editSelectedFeedCat() {
-       var rows = getSelectedFeedCats();
+       try {
+               var rows = getSelectedFeeds();
+       
+               if (rows.length == 0) {
+                       alert(__("No feeds are selected."));
+                       return;
+               }
+       
+               notify("");
+       
+               disableHotkeys();
+       
+               notify_progress("Loading, please wait...");
+       
+               var query = "backend.php?op=pref-feeds&subop=editfeeds&ids=" +
+                       param_escape(rows.toString());
 
-       if (rows.length == 0) {
-               alert(__("No categories are selected."));
-               return;
-       }
+               new Ajax.Request(query, {
+                       onComplete: function(transport) {
+                                       infobox_callback2(transport);
+                               } });
 
-       if (rows.length > 1) {
-               alert(__("Please select only one category."));
-               return;
+       } catch (e) {
+               exception_error("editSelectedFeeds", e);
        }
-
-       notify("");
-
-       editFeedCat(rows[0]);
-
 }
 
 function piggie(enable) {
        if (enable) {
                debug("I LOVEDED IT!");
-               var piggie = document.getElementById("piggie");
+               var piggie = $("piggie");
 
                Element.show(piggie);
                Position.Center(piggie);
@@ -1249,7 +981,7 @@ function piggie(enable) {
 
 function validateOpmlImport() {
        
-       var opml_file = document.getElementById("opml_file");
+       var opml_file = $("opml_file");
 
        if (opml_file.value.length == 0) {
                alert(__("No OPML file to upload."));
@@ -1260,52 +992,57 @@ function validateOpmlImport() {
 }
 
 function updateFilterList(sort_key) {
+       try {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
+               var filter_search = $("filter_search");
+               var search = "";
+               if (filter_search) { search = filter_search.value; }
+       
+               var query = "backend.php?op=pref-filters&sort=" + 
+                       param_escape(sort_key) + 
+                       "&search=" + param_escape(search);
 
-       var filter_search = document.getElementById("filter_search");
-       var search = "";
-       if (filter_search) { search = filter_search.value; }
+               new Ajax.Request(query, {
+                               onComplete: function(transport) {
+                                               filterlist_callback2(transport);
+                       } });
 
-       xmlhttp.open("GET", "backend.php?op=pref-filters&sort=" + 
-               param_escape(sort_key) + 
-               "&search=" + param_escape(search), true);
-       xmlhttp.onreadystatechange=filterlist_callback;
-       xmlhttp.send(null);
+       } catch (e) {
+               exception_error("updateFilterList", e);
+       }
 
 }
 
 function updateLabelList(sort_key) {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
+       try {
 
-       var label_search = document.getElementById("label_search");
-       var search = "";
-       if (label_search) { search = label_search.value; }
+               var label_search = $("label_search");
+               var search = "";
+               if (label_search) { search = label_search.value; }
+       
+               var query = "backend.php?op=pref-labels&sort=" + 
+                       param_escape(sort_key) +
+                       "&search=" + param_escape(search);
+       
+               new Ajax.Request(query, {
+                       onComplete: function(transport) {
+                               labellist_callback2(transport);
+                       } });
 
-       xmlhttp.open("GET", "backend.php?op=pref-labels&sort=" + 
-               param_escape(sort_key) +
-               "&search=" + param_escape(search), true);
-       xmlhttp.onreadystatechange=labellist_callback;
-       xmlhttp.send(null);
+       } catch (e) {
+               exception_error("updateLabelList", e);
+       }
 }
 
 function updatePrefsList() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
+       var query = "backend.php?op=pref-prefs";
 
-       xmlhttp.open("GET", "backend.php?op=pref-prefs", true);
-       xmlhttp.onreadystatechange=prefslist_callback;
-       xmlhttp.send(null);
+       new Ajax.Request(query, {
+               onComplete: function(transport) { 
+                       prefslist_callback2(transport); 
+               } });
 
 }
 
@@ -1317,14 +1054,11 @@ function selectTab(id, noupdate, subop) {
 
        try {
 
-               if (!xmlhttp_ready(xmlhttp)) {
-                       printLockingError();
-                       return
-               }
-
                try {
-                       var c = document.getElementById('prefContent'); 
-                       c.scrollTop = 0;
+                       if (id != active_tab) {
+                               var c = $('prefContent');       
+                               c.scrollTop = 0;
+                       }
                } catch (e) { };
 
                if (!noupdate) {
@@ -1338,7 +1072,6 @@ function selectTab(id, noupdate, subop) {
        
                        // clean up all current selections, just in case
                        active_feed_cat = false;
-                       active_label = false;
 
 //                     Effect.Fade("prefContent", {duration: 1, to: 0.01, 
 //                             queue: { position:'end', scope: 'FEED_TAB', limit: 1 } } );
@@ -1353,14 +1086,12 @@ function selectTab(id, noupdate, subop) {
                                updatePrefsList();
                        } else if (id == "userConfig") {
                                updateUsersList();
-                       } else if (id == "feedBrowser") {
-                               updateBigFeedBrowser();
                        }
                }
 
                /* clean selection from all tabs */
        
-               var tabs_holder = document.getElementById("prefTabs");
+               var tabs_holder = $("prefTabs");
                var tab = tabs_holder.firstChild;
 
                while (tab) {
@@ -1372,7 +1103,7 @@ function selectTab(id, noupdate, subop) {
 
                /* mark new tab as selected */
 
-               tab = document.getElementById(id + "Tab");
+               tab = $(id + "Tab");
        
                if (tab) {
                        if (!tab.className.match("Selected")) {
@@ -1387,76 +1118,81 @@ function selectTab(id, noupdate, subop) {
        }
 }
 
-function backend_sanity_check_callback() {
+function backend_sanity_check_callback2(transport) {
+
+       try {
+
+               if (sanity_check_done) {
+                       fatalError(11, "Sanity check request received twice. This can indicate "+
+                     "presence of Firebug or some other disrupting extension. "+
+                               "Please disable it and try again.");
+                       return;
+               }
 
-       if (xmlhttp.readyState == 4) {
+               if (!transport.responseXML) {
+                       fatalError(3, "Sanity Check: Received reply is not XML", 
+                               transport.responseText);
+                       return;
+               }
 
-               try {
+               var reply = transport.responseXML.firstChild.firstChild;
 
-                       if (sanity_check_done) {
-                               fatalError(11, "Sanity check request received twice. This can indicate "+
-                             "presence of Firebug or some other disrupting extension. "+
-                                       "Please disable it and try again.");
-                               return;
-                       }
+               if (!reply) {
+                       fatalError(3, "Sanity Check: Invalid RPC reply", transport.responseText);
+                       return;
+               }
 
-                       if (!xmlhttp.responseXML) {
-                               fatalError(3, "[D001, Received reply is not XML]: " + xmlhttp.responseText);
-                               return;
-                       }
-       
-                       var reply = xmlhttp.responseXML.firstChild.firstChild;
+               var error_code = reply.getAttribute("error-code");
        
-                       if (!reply) {
-                               fatalError(3, "[D002, Invalid RPC reply]: " + xmlhttp.responseText);
-                               return;
-                       }
-       
-                       var error_code = reply.getAttribute("error-code");
-               
-                       if (error_code && error_code != 0) {
-                               return fatalError(error_code, reply.getAttribute("error-msg"));
-                       }
-       
-                       debug("sanity check ok");
+               if (error_code && error_code != 0) {
+                       return fatalError(error_code, reply.getAttribute("error-msg"));
+               }
 
-                       var params = reply.nextSibling;
+               debug("sanity check ok");
 
-                       if (params) {
-                               debug('reading init-params...');
-                               var param = params.firstChild;
+               var params = reply.nextSibling;
 
-                               while (param) {
-                                       var k = param.getAttribute("key");
-                                       var v = param.getAttribute("value");
-                                       debug(k + " => " + v);
-                                       init_params[k] = v;                                     
-                                       param = param.nextSibling;
-                               }
+               if (params) {
+                       debug('reading init-params...');
+                       var param = params.firstChild;
+
+                       while (param) {
+                               var k = param.getAttribute("key");
+                               var v = param.getAttribute("value");
+                               debug(k + " => " + v);
+                               init_params[k] = v;                                     
+                               param = param.nextSibling;
                        }
+               }
 
-                       sanity_check_done = true;
+               sanity_check_done = true;
 
-                       init_second_stage();
+               init_second_stage();
 
-               } catch (e) {
-                       exception_error("backend_sanity_check_callback", e);
-               }
-       } 
+       } catch (e) {
+               exception_error("backend_sanity_check_callback", e);
+       }
 }
 
 function init_second_stage() {
 
        try {
                active_tab = getInitParam("prefs_active_tab");
+               if (!$(active_tab+"Tab")) active_tab = "genConfig";
                if (!active_tab || active_tab == '0') active_tab = "genConfig";
 
                document.onkeydown = pref_hotkey_handler;
+               document.onmousedown = mouse_down_handler;
+               document.onmouseup = mouse_up_handler;
 
                var tab = getURLParam('tab');
                
                caller_subop = getURLParam('subop');
 
+               if (getURLParam("subopparam")) {
+                       caller_subop = caller_subop + ":" + getURLParam("subopparam");
+               }
+
                if (tab) {
                        active_tab = tab;
                }
@@ -1470,6 +1206,8 @@ function init_second_stage() {
 
                loading_set_progress(60);
 
+               setTimeout("hotkey_prefix_timeout()", 5*1000);
+
        } catch (e) {
                exception_error("init_second_stage", e);
        }
@@ -1487,19 +1225,14 @@ function init() {
                        debug('debug mode activated');
                }
 
-               // IE kludge
-               if (!xmlhttp) {
-                       document.getElementById("prefContent").innerHTML = 
-                               "<b>Fatal error:</b> This program needs XmlHttpRequest " + 
-                               "to function properly. Your browser doesn't seem to support it.";
-                       return;
-               }
-
                loading_set_progress(30);
 
-               xmlhttp.open("GET", "backend.php?op=rpc&subop=sanityCheck", true);
-               xmlhttp.onreadystatechange=backend_sanity_check_callback;
-               xmlhttp.send(null);
+               var query = "backend.php?op=rpc&subop=sanityCheck";
+
+               new Ajax.Request(query, {
+                       onComplete: function(transport) { 
+                               backend_sanity_check_callback2(transport);
+                       } });
 
        } catch (e) {
                exception_error("init", e);
@@ -1508,24 +1241,22 @@ function init() {
 
 function categorizeSelectedFeeds() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
        var sel_rows = getSelectedFeeds();
 
-       var cat_sel = document.getElementById("sfeed_set_fcat");
+       var cat_sel = $("sfeed_set_fcat");
        var cat_id = cat_sel[cat_sel.selectedIndex].value;
 
        if (sel_rows.length > 0) {
 
                notify_progress("Changing category of selected feeds...");
 
-               xmlhttp.open("GET", "backend.php?op=pref-feeds&subop=categorize&ids="+
-                       param_escape(sel_rows.toString()) + "&cat_id=" + param_escape(cat_id), true);
-               xmlhttp.onreadystatechange=feedlist_callback;
-               xmlhttp.send(null);
+               var query = "backend.php?op=pref-feeds&subop=categorize&ids="+
+                       param_escape(sel_rows.toString()) + "&cat_id=" + param_escape(cat_id);
+
+               new Ajax.Request(query, {
+                       onComplete: function(transport) { 
+                               feedlist_callback2(transport); 
+                       } });
 
        } else {
 
@@ -1545,10 +1276,12 @@ function validatePrefsReset() {
                        query = query + "&subop=reset-config";
                        debug(query);
 
-                       xmlhttp.open("POST", "backend.php", true);
-                       xmlhttp.onreadystatechange=prefs_reset_callback;
-                       xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
-                       xmlhttp.send(query);
+                       new Ajax.Request("backend.php", {
+                               parameters: query,
+                               onComplete: function(transport) { 
+                                       prefs_reset_callback2(transport);
+                               } });
+
                }
 
        } catch (e) {
@@ -1559,14 +1292,6 @@ function validatePrefsReset() {
 
 }
 
-function browseFeeds(limit) {
-
-       xmlhttp.open("GET", "backend.php?op=pref-feeds&subop=browse", true);
-       xmlhttp.onreadystatechange=infobox_callback;
-       xmlhttp.send(null);
-
-}
-
 function feedBrowserSubscribe() {
        try {
 
@@ -1574,10 +1299,15 @@ function feedBrowserSubscribe() {
 
                if (selected.length > 0) {
                        closeInfoBox();
-                       xmlhttp.open("GET", "backend.php?op=pref-feeds&subop=massSubscribe&ids="+
-                               param_escape(selected.toString()), true);
-                       xmlhttp.onreadystatechange=feedlist_callback;
-                       xmlhttp.send(null);
+
+                       var query = "backend.php?op=pref-feeds&subop=massSubscribe&ids="+
+                               param_escape(selected.toString());
+
+                       new Ajax.Request(query, {
+                               onComplete: function(transport) { 
+                                       feedlist_callback2(transport); 
+                               } });
+
                } else {
                        alert(__("No feeds are selected."));
                }
@@ -1587,59 +1317,9 @@ function feedBrowserSubscribe() {
        }
 }
 
-function updateBigFeedBrowser(limit) {
-
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
-       var query = "backend.php?op=pref-feed-browser";
-
-       var limit_sel = document.getElementById("feedBrowserLimit");
-
-       if (limit_sel) {
-               var limit = limit_sel[limit_sel.selectedIndex].value;
-               query = query + "&limit=" + param_escape(limit);
-       }
-
-       xmlhttp.open("GET", query, true);
-       xmlhttp.onreadystatechange=feed_browser_callback;
-       xmlhttp.send(null);
-}
-
-function browserToggleExpand(id) {
-       try {
-/*             if (feed_to_expand && feed_to_expand != id) {
-                       var d = document.getElementById("BRDET-" + feed_to_expand);
-                       d.style.display = "none";
-               } */
-
-               if (!xmlhttp_ready(xmlhttp)) {
-                       printLockingError();
-                       return
-               }
-
-/*             if (feed_to_expand && id != feed_to_expand) {
-                       Effect.Fade('BRDET-' + feed_to_expand, {duration : 0.5});
-               } */
-
-               var d = document.getElementById("BRDET-" + id);
-       
-               if (Element.visible(d)) {
-                       Effect.Fade(d, {duration : 0.5});
-               } else {
-                       feed_to_expand = id;
-
-                       xmlhttp.open("GET", "backend.php?op=pref-feed-browser&subop=details&id="
-                               + param_escape(id), true);
-                       xmlhttp.onreadystatechange=expand_feed_callback;
-                       xmlhttp.send(null);
-               }
-
-       } catch (e) {
-               exception_error("browserToggleExpand", e);
-       }
+function updateBigFeedBrowserBtn() {
+       notify_progress("Loading, please wait...");
+       return updateBigFeedBrowser();
 }
 
 function selectPrefRows(kind, select) {
@@ -1731,6 +1411,8 @@ function pref_hotkey_handler(e) {
                var keycode;
                var shift_key = false;
 
+               var cmdline = $('cmdline');
+
                try {
                        shift_key = e.shiftKey;
                } catch (e) {
@@ -1749,6 +1431,7 @@ function pref_hotkey_handler(e) {
                        if (Element.visible("hotkey_help_overlay")) {
                                Element.hide("hotkey_help_overlay");
                        }
+                       colorPickerHideAll();
                        hotkey_prefix = false;
                        closeInfoBox();
                } 
@@ -1762,6 +1445,15 @@ function pref_hotkey_handler(e) {
 
                if ((keycode == 67 || keycode == 71) && !hotkey_prefix) {
                        hotkey_prefix = keycode;
+
+                       var date = new Date();
+                       var ts = Math.round(date.getTime() / 1000);
+
+                       hotkey_prefix_pressed = ts;
+
+                       cmdline.innerHTML = keychar;
+                       Element.show(cmdline);
+
                        debug("KP: PREFIX=" + keycode + " CHAR=" + keychar);
                        return;
                }
@@ -1778,6 +1470,8 @@ function pref_hotkey_handler(e) {
 
                /* Global hotkeys */
 
+               Element.hide(cmdline);
+
                if (!hotkey_prefix) {
 
                        if (keycode == 68 && shift_key) { // d
@@ -1802,10 +1496,10 @@ function pref_hotkey_handler(e) {
 
                        if (keycode == 191 || keychar == '/') { // /
                                var search_boxes = new Array("label_search", 
-                                       "feed_search", "filter_search", "user_search");
+                                       "feed_search", "filter_search", "user_search", "feed_browser_search");
 
                                for (var i = 0; i < search_boxes.length; i++) {
-                                       var elem = document.getElementById(search_boxes[i]);
+                                       var elem = $(search_boxes[i]);
                                        if (elem) {
                                                focus_element(search_boxes[i]);
                                                return false;
@@ -1829,10 +1523,10 @@ function pref_hotkey_handler(e) {
                                return false;
                        }
 
-                       if (keycode == 76) { // l
+/*                     if (keycode == 76) { // l
                                displayDlg("quickAddLabel");
                                return false;
-                       }
+                       } */
 
                        if (keycode == 85) { // u
                                // no-op
@@ -1856,32 +1550,27 @@ function pref_hotkey_handler(e) {
 
                        hotkey_prefix = false;
 
-                       if (keycode == 49 && document.getElementById("genConfigTab")) { // 1
+                       if (keycode == 49 && $("genConfigTab")) { // 1
                                selectTab("genConfig");
                                return false;
                        }
 
-                       if (keycode == 50 && document.getElementById("feedConfigTab")) { // 2
+                       if (keycode == 50 && $("feedConfigTab")) { // 2
                                selectTab("feedConfig");
                                return false;
                        }
 
-                       if (keycode == 51 && document.getElementById("feedBrowserTab")) { // 3
-                               selectTab("feedBrowser");
-                               return false;
-                       }
-
-                       if (keycode == 52 && document.getElementById("filterConfigTab")) { // 4
+                       if (keycode == 51 && $("filterConfigTab")) { // 4
                                selectTab("filterConfig");
                                return false;
                        }
 
-                       if (keycode == 53 && document.getElementById("labelConfigTab")) { // 5
+                       if (keycode == 52 && $("labelConfigTab")) { // 5
                                selectTab("labelConfig");
                                return false;
                        }
 
-                       if (keycode == 54 && document.getElementById("userConfigTab")) { // 6
+                       if (keycode == 53 && $("userConfigTab")) { // 6
                                selectTab("userConfig");
                                return false;
                        }
@@ -1892,7 +1581,7 @@ function pref_hotkey_handler(e) {
 
                }
 
-               if (document.getElementById("piggie")) {
+               if ($("piggie")) {
        
                        if (seq.match("807371717369")) {
                                seq = "";
@@ -1914,22 +1603,24 @@ function pref_hotkey_handler(e) {
 }
 
 function editFeedCats() {
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
-       document.getElementById("subscribe_to_feed_btn").disabled = true;
-
        try {
-               document.getElementById("top25_feeds_btn").disabled = true;
+               $("subscribe_to_feed_btn").disabled = true;
+       
+               try {
+                       $("top25_feeds_btn").disabled = true;
+               } catch (e) {
+                       // this button is not always available, no-op if not found
+               }
+       
+               var query = "backend.php?op=pref-feeds&subop=editCats";
+
+               new Ajax.Request(query, {
+                       onComplete: function(transport) {
+                               infobox_feed_cat_callback2(transport);
+                       } });
        } catch (e) {
-               // this button is not always available, no-op if not found
+               exception_error("editFeedCats", e);
        }
-
-       xmlhttp.open("GET", "backend.php?op=pref-feeds&subop=editCats", true);
-       xmlhttp.onreadystatechange=infobox_feed_cat_callback;
-       xmlhttp.send(null);
 }
 
 function showFeedsWithErrors() {
@@ -1940,11 +1631,6 @@ function changeUserPassword() {
 
        try {
 
-               if (!xmlhttp_ready(xmlhttp)) {
-                       printLockingError();
-                       return false;
-               }
-       
                var f = document.forms["change_pass_form"];
 
                if (f) {
@@ -1978,11 +1664,13 @@ function changeUserPassword() {
                var query = Form.serialize("change_pass_form");
        
                notify_progress("Trying to change password...");
-       
-               xmlhttp.open("POST", "backend.php", true);
-               xmlhttp.onreadystatechange=changepass_callback;
-               xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
-               xmlhttp.send(query);
+
+               new Ajax.Request("backend.php", {
+                       parameters: query,
+                       onComplete: function(transport) { 
+                               changepass_callback2(transport); 
+                       } });
+
 
        } catch (e) {
                exception_error("changeUserPassword", e);
@@ -1995,19 +1683,15 @@ function changeUserEmail() {
 
        try {
 
-               if (!xmlhttp_ready(xmlhttp)) {
-                       printLockingError();
-                       return false;
-               }
-       
                var query = Form.serialize("change_email_form");
        
                notify_progress("Trying to change e-mail...");
        
-               xmlhttp.open("POST", "backend.php", true);
-               xmlhttp.onreadystatechange=notify_callback;
-               xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
-               xmlhttp.send(query);
+               new Ajax.Request("backend.php", {
+                       parameters: query,
+                       onComplete: function(transport) { 
+                               notify_callback2(transport); 
+                       } });
 
        } catch (e) {
                exception_error("changeUserPassword", e);
@@ -2024,42 +1708,22 @@ function feedlistToggleSLAT() {
 
 function pubRegenKey() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return false;
-       }
-
        var ok = confirm(__("Replace current publishing address with a new one?"));
 
        if (ok) {
 
                notify_progress("Trying to change address...");
 
-               xmlhttp.open("GET", "backend.php?op=rpc&subop=regenPubKey");
-               xmlhttp.onreadystatechange=replace_pubkey_callback;
-               xmlhttp.send(null);
-       }
-
-       return false;
-}
-
-function pubToClipboard() {
+               var query = "backend.php?op=rpc&subop=regenPubKey";
 
-       try {
-
-               if (!xmlhttp_ready(xmlhttp)) {
-                       printLockingError();
-                       return false;
-               }
-       
-               var link = document.getElementById("pubGenAddress");
-               alert(link.href);
+               new Ajax.Request(query, {
+                       onComplete: function(transport) {
+                                       replace_pubkey_callback(transport);
+                               } });
 
-       } catch (e) {
-               exception_error("pubToClipboard", e);
        }
 
-       return false; 
+       return false;
 }
 
 function validatePrefsSave() {
@@ -2073,10 +1737,12 @@ function validatePrefsSave() {
                        query = query + "&subop=save-config";
                        debug(query);
 
-                       xmlhttp.open("POST", "backend.php", true);
-                       xmlhttp.onreadystatechange=notify_callback;
-                       xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
-                       xmlhttp.send(query);
+                       new Ajax.Request("backend.php", {
+                               parameters: query,
+                               onComplete: function(transport) { 
+                               notify_callback2(transport); 
+                       } });
+
                }
 
        } catch (e) {
@@ -2088,7 +1754,7 @@ function validatePrefsSave() {
 
 function feedActionChange() {
        try {
-               var chooser = document.getElementById("feedActionChooser");
+               var chooser = $("feedActionChooser");
                var opid = chooser[chooser.selectedIndex].value;
 
                chooser.selectedIndex = 0;
@@ -2153,11 +1819,6 @@ function clearFeedArticles(feed_id) {
 
 function rescoreSelectedFeeds() {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
        var sel_rows = getSelectedFeeds();
 
        if (sel_rows.length > 0) {
@@ -2168,10 +1829,14 @@ function rescoreSelectedFeeds() {
                if (ok) {
                        notify_progress("Rescoring selected feeds...", true);
        
-                       xmlhttp.open("GET", "backend.php?op=pref-feeds&subop=rescore&quiet=1&ids="+
-                               param_escape(sel_rows.toString()), true);
-                       xmlhttp.onreadystatechange=notify_callback;
-                       xmlhttp.send(null);
+                       var query = "backend.php?op=pref-feeds&subop=rescore&quiet=1&ids="+
+                               param_escape(sel_rows.toString());
+
+                       new Ajax.Request(query, {
+                               onComplete: function(transport) {
+                                               notify_callback2(transport);
+                       } });
+
                }
        } else {
                alert(__("No feeds are selected."));
@@ -2181,37 +1846,45 @@ function rescoreSelectedFeeds() {
 }
 
 function rescore_all_feeds() {
-               var ok = confirm(__("Rescore all articles? This operation may take a lot of time."));
+       var ok = confirm(__("Rescore all articles? This operation may take a lot of time."));
 
-               if (ok) {
-                       notify_progress("Rescoring feeds...", true);
+       if (ok) {
+               notify_progress("Rescoring feeds...", true);
 
-                       xmlhttp.open("GET", "backend.php?op=pref-feeds&subop=rescoreAll&quiet=1", true);
-                       xmlhttp.onreadystatechange=notify_callback;
-                       xmlhttp.send(null);
-               }
+               var query = "backend.php?op=pref-feeds&subop=rescoreAll&quiet=1";
+
+               new Ajax.Request(query, {
+                       onComplete: function(transport) {
+                                       notify_callback2(transport);
+               } });
+       }
 }
 
 function removeFilter(id, title) {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
+       try {
 
-       var msg = __("Remove filter %s?").replace("%s", title);
+               var msg = __("Remove filter %s?").replace("%s", title);
+       
+               var ok = confirm(msg);
+       
+               if (ok) {
+                       closeInfoBox();
+       
+                       notify_progress("Removing filter...");
+               
+                       var query = "backend.php?op=pref-filters&subop=remove&ids="+
+                               param_escape(id);
 
-       var ok = confirm(msg);
+                       new Ajax.Request(query, {
+                               onComplete: function(transport) {
+                                               filterlist_callback2(transport);
+                       } });
 
-       if (ok) {
-               closeInfoBox();
+               }
 
-               notify_progress("Removing filter...");
-       
-               xmlhttp.open("GET", "backend.php?op=pref-filters&subop=remove&ids="+
-                       param_escape(id), true);
-               xmlhttp.onreadystatechange=filterlist_callback;
-               xmlhttp.send(null);
+       } catch (e) {
+               exception_error("removeFilter", e);
        }
 
        return false;
@@ -2219,40 +1892,37 @@ function removeFilter(id, title) {
 
 function unsubscribeFeed(id, title) {
 
-       if (!xmlhttp_ready(xmlhttp)) {
-               printLockingError();
-               return
-       }
-
-       var msg = __("Unsubscribe from %s?").replace("%s", title);
-
-       var ok = confirm(msg);
-
-       if (ok) {
-               closeInfoBox();
+       try {
 
-               notify_progress("Removing feed...");
+               var msg = __("Unsubscribe from %s?").replace("%s", title);
+       
+               var ok = confirm(msg);
+       
+               if (ok) {
+                       closeInfoBox();
+       
+                       notify_progress("Removing feed...");
+               
+                       var query = "backend.php?op=pref-feeds&subop=remove&ids="+
+                               param_escape(id);
+       
+                       new Ajax.Request(query, {
+                                       onComplete: function(transport) {
+                                                       feedlist_callback2(transport);
+                               } });
+               }
        
-               xmlhttp.open("GET", "backend.php?op=pref-feeds&subop=remove&ids="+
-                       param_escape(id), true);
-               xmlhttp.onreadystatechange=filterlist_callback;
-               xmlhttp.send(null);
+       } catch (e) {
+               exception_error("unsubscribeFeed", e);
        }
 
        return false;
 
-       return false;
-
 }
 
 function feedsEditSave() {
        try {
 
-               if (!xmlhttp_ready(xmlhttp)) {
-                       printLockingError();
-                       return
-               }
-
                var ok = confirm(__("Save changes to selected feeds?"));
 
                if (ok) {
@@ -2292,10 +1962,12 @@ function feedsEditSave() {
        
                        notify_progress("Saving feeds...");
        
-                       xmlhttp.open("POST", "backend.php", true);
-                       xmlhttp.onreadystatechange=feedlist_callback;
-                       xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
-                       xmlhttp.send(query);
+                       new Ajax.Request("backend.php", {
+                               parameters: query,
+                               onComplete: function(transport) { 
+                                       feedlist_callback2(transport); 
+                               } });
+
                }
 
                return false;
@@ -2307,7 +1979,7 @@ function feedsEditSave() {
 function batchFeedsToggleField(cb, elem, label) {
        try {
                var f = document.forms["batch_edit_feed_form"];
-               var l = document.getElementById(label);
+               var l = $(label);
 
                if (cb.checked) {
                        f[elem].disabled = false;
@@ -2332,3 +2004,149 @@ function batchFeedsToggleField(cb, elem, label) {
        }
 }
 
+function labelColorReset() {
+       try {
+               var labels = getSelectedLabels();
+
+               var ok = confirm(__("Reset label colors to default?"));
+
+               if (ok) {
+
+                       var query = "backend.php?op=pref-labels&subop=color-reset&ids="+
+                               param_escape(labels.toString());
+
+                       new Ajax.Request(query, {
+                               onComplete: function(transport) {
+                                               labellist_callback2(transport);
+                                       } });
+               }
+
+       } catch (e) {
+               exception_error("labelColorReset", e);
+       }
+}
+
+function labelColorAsk(id, kind) {
+       try {
+
+               var p = null
+
+               if (kind == "fg") {
+                       p = prompt(__("Please enter new label foreground color:"));
+               } else {
+                       p = prompt(__("Please enter new label background color:"));
+               }
+
+               if (p != null) {
+
+                       var query = "backend.php?op=pref-labels&subop=color-set&kind=" + kind +
+                               "&ids="+        param_escape(id) + "&color=" + param_escape(p);
+
+                       selectPrefRows('label', false);
+
+                       var e = $("LICID-" + id);
+
+                       if (e) {                
+                               if (kind == "fg") {
+                                       e.style.color = p
+                               } else {
+                                       e.style.backgroundColor = p;
+                               }
+                       }
+
+                       new Ajax.Request(query);
+               }
+
+       } catch (e) {
+               exception_error("labelColorReset", e);
+       }
+}
+
+
+function colorPicker(id, fg, bg) {
+       try {
+               var picker = $("colorPicker-" + id);
+
+               if (picker) Element.show(picker);
+
+       } catch (e) {
+               exception_error("colorPicker", e);
+       }
+}
+
+function colorPickerHideAll() {
+       try {
+               if ($("prefLabelList")) {
+
+                       var elems = $("prefLabelList").getElementsByTagName("DIV");
+
+                       for (var i = 0; i < elems.length; i++) {
+                               if (elems[i].id && elems[i].id.match("colorPicker-")) {
+                                       Element.hide(elems[i]);
+                               }
+                       }
+               }
+
+       } catch (e) {
+               exception_error("colorPickerHideAll", e);
+       }
+}
+
+function colorPickerDo(id, fg, bg) {
+       try {
+
+               var query = "backend.php?op=pref-labels&subop=color-set&kind=both"+
+                       "&ids=" + param_escape(id) + "&fg=" + param_escape(fg) + 
+                       "&bg=" + param_escape(bg);
+
+               var e = $("LICID-" + id);
+
+               if (e) {                
+                       e.style.color = fg;
+                       e.style.backgroundColor = bg;
+               }
+
+               new Ajax.Request(query);
+
+       } catch (e) {
+               exception_error("colorPickerDo", e);
+       }
+}
+
+function colorPickerActive(b) {
+       color_picker_active = b;
+}
+
+function mouse_down_handler(e) {
+       try {
+
+               /* do not prevent right click */
+               if (e && e.button && e.button == 2) return;
+
+               if (selection_disabled) {
+                       document.onselectstart = function() { return false; };
+                       return false;
+               }
+
+       } catch (e) {
+               exception_error("mouse_down_handler", e);
+       }
+}
+
+function mouse_up_handler(e) {
+       try {
+               mouse_is_down = false;
+
+               if (!selection_disabled) {
+                       document.onselectstart = null;
+               }
+
+               if (!color_picker_active) {
+                       colorPickerHideAll();
+               }
+
+       } catch (e) {
+               exception_error("mouse_up_handler", e);
+       }
+}
+