functions.js

   1 var hotkeys_enabled = true;
   2
   3 function browser_has_opacity() {
   4         return navigator.userAgent.match("Gecko") != null ||
   5                 navigator.userAgent.match("Opera") != null;
   6 }
   7
   8 function exception_error(location, e) {
   9         var msg;
  10
  11         if (e.fileName) {
  12                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  13
  14                 msg = "Exception: " + e.name + ", " + e.message +
  15                         "\nFunction: " + location + "()" +
  16                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  17         } else {
  18                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  19         }
  20
  21         alert(msg);
  22 }
  23
  24 function disableHotkeys() {
  25         hotkeys_enabled = false;
  26 }
  27
  28 function enableHotkeys() {
  29         hotkeys_enabled = true;
  30 }
  31
  32 function xmlhttp_ready(obj) {
  33         return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
  34 }
  35
  36 function notify_callback() {
  37         var container = document.getElementById('notify');
  38         if (xmlhttp.readyState == 4) {
  39                 container.innerHTML=xmlhttp.responseText;
  40         }
  41 }
  42
  43 function rpc_notify_callback() {
  44         var container = document.getElementById('notify');
  45         if (xmlhttp_rpc.readyState == 4) {
  46                 container.innerHTML=xmlhttp_rpc.responseText;
  47         }
  48 }
  49
  50 function rpc_pnotify_callback() {
  51         var container = parent.document.getElementById('notify');
  52         if (xmlhttp_rpc.readyState == 4) {
  53                 container.innerHTML=xmlhttp_rpc.responseText;
  54         }
  55 }
  56
  57 function param_escape(arg) {
  58         if (typeof encodeURIComponent != 'undefined')
  59                 return encodeURIComponent(arg);
  60         else
  61                 return escape(arg);
  62 }
  63
  64 function param_unescape(arg) {
  65         if (typeof decodeURIComponent != 'undefined')
  66                 return decodeURIComponent(arg);
  67         else
  68                 return unescape(arg);
  69 }
  70
  71 function delay(gap) {
  72         var then,now;
  73         then=new Date().getTime();
  74         now=then;
  75         while((now-then)<gap) {
  76                 now=new Date().getTime();
  77         }
  78 }
  79
  80 var notify_hide_timerid = false;
  81 var notify_last_doc = false;
  82
  83 var notify_effect = false;
  84
  85 function hide_notify() {
  86         if (notify_last_doc) {
  87                 var n = notify_last_doc.getElementById("notify");
  88                 if (browser_has_opacity()) {
  89                         if (notify_opacity >= 0) {
  90                                 notify_opacity = notify_opacity - 0.1;
  91                                 n.style.opacity = notify_opacity;
  92                                 notify_hide_timerid = window.setTimeout("hide_notify()", 20);
  93                         } else {
  94                                 n.style.display = "none";
  95                                 n.style.opacity = 1;
  96                         }
  97                 } else {
  98                         n.style.display = "none";
  99                 }
 100         }
 101 }
 102
 103 function notify_real(msg, doc, no_hide, is_err) {
 104
 105         var n = doc.getElementById("notify");
 106         var nb = doc.getElementById("notify_body");
 107
 108         if (!n || !nb) return;
 109
 110         if (notify_hide_timerid) {
 111                 window.clearTimeout(notify_hide_timerid);
 112         }
 113
 114         notify_last_doc = doc;
 115         notify_opacity = 1;
 116
 117         if (msg == "") {
 118                 if (n.style.display == "block") {
 119                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 120                 }
 121                 return;
 122         } else {
 123                 n.style.display = "block";
 124         }
 125
 126         if (is_err) {
 127                 n.style.backgroundColor = "#ffcccc";
 128                 n.style.color = "black";
 129                 n.style.borderColor = "#ff0000";
 130         } else {
 131                 n.style.backgroundColor = "#fff7d5";
 132                 n.style.borderColor = "#d7c47a";
 133                 n.style.color = "black";
 134         }
 135
 136         nb.innerHTML = msg;
 137
 138         if (!no_hide) {
 139                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 140         }
 141 }
 142
 143 function p_notify(msg, no_hide, is_err) {
 144         notify_real(msg, parent.document, no_hide, is_err);
 145 }
 146
 147 function notify(msg, no_hide, is_err) {
 148         notify_real(msg, document, no_hide, is_err);
 149 }
 150
 151 function printLockingError() {
 152         notify("Please wait until operation finishes");}
 153
 154 var seq = "";
 155
 156 function hotkey_handler(e) {
 157
 158         var keycode;
 159
 160         if (!hotkeys_enabled) return;
 161
 162         if (window.event) {
 163                 keycode = window.event.keyCode;
 164         } else if (e) {
 165                 keycode = e.which;
 166         }
 167
 168         if (keycode == 13 || keycode == 27) {
 169                 seq = "";
 170         } else {
 171                 seq = seq + "" + keycode;
 172         }
 173
 174         if (document.getElementById("piggie")) {
 175
 176                 if (seq.match("807371717369")) {
 177                         seq = "";
 178                         localPiggieFunction(true);
 179                 } else {
 180                         localPiggieFunction(false);
 181                 }
 182         }
 183
 184         if (typeof localHotkeyHandler != 'undefined') {
 185                 try {
 186                         localHotkeyHandler(keycode);
 187                 } catch (e) {
 188                         exception_error("hotkey_handler", e);
 189                 }
 190         }
 191
 192 }
 193
 194 function cleanSelectedList(element) {
 195         var content = document.getElementById(element);
 196
 197         if (!document.getElementById("feedCatHolder")) {
 198                 for (i = 0; i < content.childNodes.length; i++) {
 199                         var child = content.childNodes[i];
 200                         try {
 201                                 child.className = child.className.replace("Selected", "");
 202                         } catch (e) {
 203                                 //
 204                         }
 205                 }
 206         } else {
 207                 for (i = 0; i < content.childNodes.length; i++) {
 208                         var child = content.childNodes[i];
 209                         if (child.id == "feedCatHolder") {
 210                                 parent.debug(child.id);
 211                                 var fcat = child.lastChild;
 212                                 for (j = 0; j < fcat.childNodes.length; j++) {
 213                                         var feed = fcat.childNodes[j];
 214                                         feed.className = feed.className.replace("Selected", "");
 215                                 }
 216                         }
 217                 }
 218         }
 219 }
 220
 221
 222 function cleanSelected(element) {
 223         var content = document.getElementById(element);
 224
 225         for (i = 0; i < content.rows.length; i++) {
 226                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 227         }
 228 }
 229
 230 function getVisibleUnreadHeadlines() {
 231         var content = document.getElementById("headlinesList");
 232
 233         var rows = new Array();
 234
 235         for (i = 0; i < content.rows.length; i++) {
 236                 var row_id = content.rows[i].id.replace("RROW-", "");
 237                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 238                                 rows.push(row_id);
 239                 }
 240         }
 241         return rows;
 242 }
 243
 244 function getVisibleHeadlineIds() {
 245
 246         var content = document.getElementById("headlinesList");
 247
 248         var rows = new Array();
 249
 250         for (i = 0; i < content.rows.length; i++) {
 251                 var row_id = content.rows[i].id.replace("RROW-", "");
 252                 if (row_id.length > 0) {
 253                                 rows.push(row_id);
 254                 }
 255         }
 256         return rows;
 257 }
 258
 259 function getFirstVisibleHeadlineId() {
 260         var rows = getVisibleHeadlineIds();
 261         return rows[0];
 262 }
 263
 264 function getLastVisibleHeadlineId() {
 265         var rows = getVisibleHeadlineIds();
 266         return rows[rows.length-1];
 267 }
 268
 269 function markHeadline(id) {
 270         var row = document.getElementById("RROW-" + id);
 271         if (row) {
 272                 var is_active = false;
 273
 274                 if (row.className.match("Active")) {
 275                         is_active = true;
 276                 }
 277                 row.className = row.className.replace("Selected", "");
 278                 row.className = row.className.replace("Active", "");
 279                 row.className = row.className.replace("Insensitive", "");
 280
 281                 if (is_active) {
 282                         row.className = row.className = "Active";
 283                 }
 284
 285                 var check = document.getElementById("RCHK-" + id);
 286
 287                 if (check) {
 288                         check.checked = true;
 289                 }
 290
 291                 row.className = row.className + "Selected";
 292
 293         }
 294 }
 295
 296 function getFeedIds() {
 297         var content = document.getElementById("feedsList");
 298
 299         var rows = new Array();
 300
 301         for (i = 0; i < content.rows.length; i++) {
 302                 var id = content.rows[i].id.replace("FEEDR-", "");
 303                 if (id.length > 0) {
 304                         rows.push(id);
 305                 }
 306         }
 307
 308         return rows;
 309 }
 310
 311 function setCookie(name, value, lifetime, path, domain, secure) {
 312
 313         var d = false;
 314
 315         if (lifetime) {
 316                 d = new Date();
 317                 d.setTime(lifetime * 1000);
 318         }
 319
 320         int_setCookie(name, value, d, path, domain, secure);
 321
 322 }
 323
 324 function int_setCookie(name, value, expires, path, domain, secure) {
 325         document.cookie= name + "=" + escape(value) +
 326                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 327                 ((path) ? "; path=" + path : "") +
 328                 ((domain) ? "; domain=" + domain : "") +
 329                 ((secure) ? "; secure" : "");
 330 }
 331
 332 function delCookie(name, path, domain) {
 333         if (getCookie(name)) {
 334                 document.cookie = name + "=" +
 335                 ((path) ? ";path=" + path : "") +
 336                 ((domain) ? ";domain=" + domain : "" ) +
 337                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 338         }
 339 }
 340
 341
 342 function getCookie(name) {
 343
 344         var dc = document.cookie;
 345         var prefix = name + "=";
 346         var begin = dc.indexOf("; " + prefix);
 347         if (begin == -1) {
 348             begin = dc.indexOf(prefix);
 349             if (begin != 0) return null;
 350         }
 351         else {
 352             begin += 2;
 353         }
 354         var end = document.cookie.indexOf(";", begin);
 355         if (end == -1) {
 356             end = dc.length;
 357         }
 358         return unescape(dc.substring(begin + prefix.length, end));
 359 }
 360
 361 function disableContainerChildren(id, disable, doc) {
 362
 363         if (!doc) doc = document;
 364
 365         var container = doc.getElementById(id);
 366
 367         for (var i = 0; i < container.childNodes.length; i++) {
 368                 var child = container.childNodes[i];
 369
 370                 try {
 371                         child.disabled = disable;
 372                 } catch (E) {
 373
 374                 }
 375
 376                 if (disable) {
 377                         if (child.className && child.className.match("button")) {
 378                                 child.className = "disabledButton";
 379                         }
 380                 } else {
 381                         if (child.className && child.className.match("disabledButton")) {
 382                                 child.className = "button";
 383                         }
 384                 }
 385         }
 386
 387 }
 388
 389 function gotoPreferences() {
 390         document.location.href = "prefs.php";
 391 }
 392
 393 function gotoMain() {
 394         document.location.href = "tt-rss.php";
 395 }
 396
 397 function gotoExportOpml() {
 398         document.location.href = "opml.php?op=Export";
 399 }
 400
 401 function getActiveFeedId() {
 402         return getCookie("ttrss_vf_actfeed");
 403 }
 404
 405 function setActiveFeedId(id) {
 406         return setCookie("ttrss_vf_actfeed", id);
 407 }
 408
 409 var xmlhttp_rpc = Ajax.getTransport();
 410
 411 function parse_counters(reply, f_document, title_obj, scheduled_call) {
 412         try {
 413                 for (var l = 0; l < reply.childNodes.length; l++) {
 414                         if (!reply.childNodes[l] ||
 415                                 typeof(reply.childNodes[l].getAttribute) == "undefined") {
 416                                 // where did this come from?
 417                                 continue;
 418                         }
 419
 420                         var id = reply.childNodes[l].getAttribute("id");
 421                         var t = reply.childNodes[l].getAttribute("type");
 422                         var ctr = reply.childNodes[l].getAttribute("counter");
 423                         var error = reply.childNodes[l].getAttribute("error");
 424                         var has_img = reply.childNodes[l].getAttribute("hi");
 425                         var updated = reply.childNodes[l].getAttribute("updated");
 426
 427                         if (id == "global-unread") {
 428                                 title_obj.global_unread = ctr;
 429                                 title_obj.updateTitle();
 430                                 continue;
 431                         }
 432
 433                         if (t == "category") {
 434                                 var catctr = f_document.getElementById("FCATCTR-" + id);
 435                                 if (catctr) {
 436                                         catctr.innerHTML = "(" + ctr + " unread)";
 437                                 }
 438                                 continue;
 439                         }
 440
 441                         var feedctr = f_document.getElementById("FEEDCTR-" + id);
 442                         var feedu = f_document.getElementById("FEEDU-" + id);
 443                         var feedr = f_document.getElementById("FEEDR-" + id);
 444                         var feed_img = f_document.getElementById("FIMG-" + id);
 445                         var feedlink = f_document.getElementById("FEEDL-" + id);
 446
 447                         if (updated && feedlink) {
 448                                 if (error) {
 449                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 450                                 } else {
 451                                         feedlink.title = "Updated: " + updated;
 452                                 }
 453                         }
 454
 455                         if (feedctr && feedu && feedr) {
 456
 457                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 458                                         var hf = title_obj.parent.frames["headlines-frame"];
 459                                         hf.location.reload(true);
 460                                 }
 461
 462                                 feedu.innerHTML = ctr;
 463
 464                                 if (error) {
 465                                         feedr.className = feedr.className.replace("feed", "error");
 466                                 } else if (id > 0) {
 467                                         feedr.className = feedr.className.replace("error", "feed");
 468                                 }
 469
 470                                 if (ctr > 0) {
 471                                         feedctr.className = "odd";
 472                                         if (!feedr.className.match("Unread")) {
 473                                                 var is_selected = feedr.className.match("Selected");
 474
 475                                                 feedr.className = feedr.className.replace("Selected", "");
 476                                                 feedr.className = feedr.className.replace("Unread", "");
 477
 478                                                 feedr.className = feedr.className + "Unread";
 479
 480                                                 if (is_selected) {
 481                                                         feedr.className = feedr.className + "Selected";
 482                                                 }
 483
 484                                         }
 485                                 } else {
 486                                         feedctr.className = "invisible";
 487                                         feedr.className = feedr.className.replace("Unread", "");
 488                                 }
 489                         }
 490                 }
 491         } catch (e) {
 492                 exception_error("parse_counters", e);
 493         }
 494 }
 495
 496 // this one is called from feedlist context
 497 // thus title_obj passed to parse_counters is parent (e.g. main ttrss window)
 498
 499 function all_counters_callback() {
 500         if (xmlhttp_rpc.readyState == 4) {
 501                 try {
 502                         if (!xmlhttp_rpc.responseXML || !xmlhttp_rpc.responseXML.firstChild) {
 503                                 notify("[all_counters_callback] backend did not return valid XML");
 504                                 return;
 505                         }
 506
 507                         if (!parent.frames["feeds-frame"]) {
 508                                 notify("[all_counters_callback] no parent feeds-frame");
 509                                 return;
 510                         }
 511
 512                         var reply = xmlhttp_rpc.responseXML.firstChild;
 513                         var f_document = parent.frames["feeds-frame"].document;
 514
 515                         parse_counters(reply, f_document, parent);
 516
 517                 } catch (e) {
 518                         exception_error("all_counters_callback", e);
 519                 }
 520         }
 521 }
 522
 523 function update_all_counters(feed) {
 524         if (xmlhttp_ready(xmlhttp_rpc)) {
 525                 var query = "backend.php?op=rpc&subop=getAllCounters";
 526
 527                 if (feed > 0) {
 528                         query = query + "&aid=" + feed;
 529                 }
 530
 531                 xmlhttp_rpc.open("GET", query, true);
 532                 xmlhttp_rpc.onreadystatechange=all_counters_callback;
 533                 xmlhttp_rpc.send(null);
 534         }
 535 }
 536
 537 function popupHelp(tid) {
 538         var w = window.open("backend.php?op=help&tid=" + tid,
 539                 "Popup Help",
 540                 "menubar=no,location=no,resizable=yes,scrollbars=yes,status=no");
 541 }
 542
 543 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 544   * * @author Sundar Dorai-Raj
 545   * * Email: sdoraira@vt.edu
 546   * * This program is free software; you can redistribute it and/or
 547   * * modify it under the terms of the GNU General Public License
 548   * * as published by the Free Software Foundation; either version 2
 549   * * of the License, or (at your option) any later version,
 550   * * provided that any use properly credits the author.
 551   * * This program is distributed in the hope that it will be useful,
 552   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 553   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 554   * * GNU General Public License for more details at http://www.gnu.org * * */
 555
 556   var numbers=".0123456789";
 557   function isNumeric(x) {
 558     // is x a String or a character?
 559     if(x.length>1) {
 560       // remove negative sign
 561       x=Math.abs(x)+"";
 562       for(j=0;j<x.length;j++) {
 563         // call isNumeric recursively for each character
 564         number=isNumeric(x.substring(j,j+1));
 565         if(!number) return number;
 566       }
 567       return number;
 568     }
 569     else {
 570       // if x is number return true
 571       if(numbers.indexOf(x)>=0) return true;
 572       return false;
 573     }
 574   }
 575
 576
 577 function hideOrShowFeeds(doc, hide) {
 578
 579         if (!doc.styleSheets) return;
 580
 581         var css_rules = doc.styleSheets[0].cssRules;
 582
 583         if (!css_rules || !css_rules.length) return;
 584
 585         for (i = 0; i < css_rules.length; i++) {
 586                 var rule = css_rules[i];
 587
 588                 if (rule.selectorText == "ul.feedList li.feed") {
 589                         if (!hide) {
 590                                 rule.style.display = "block";
 591                         } else {
 592                                 rule.style.display = "none";
 593                         }
 594                 }
 595
 596         }
 597
 598 }
 599
 600 function selectTableRow(r, do_select) {
 601         r.className = r.className.replace("Selected", "");
 602
 603         if (do_select) {
 604                 r.className = r.className + "Selected";
 605         }
 606 }
 607
 608 function selectTableRowById(elem_id, check_id, do_select) {
 609
 610         try {
 611
 612                 var row = document.getElementById(elem_id);
 613
 614                 if (row) {
 615                         selectTableRow(row, do_select);
 616                 }
 617
 618                 var check = document.getElementById(check_id);
 619
 620                 if (check) {
 621                         check.checked = do_select;
 622                 }
 623         } catch (e) {
 624                 exception_error("selectTableRowById", e);
 625         }
 626 }
 627
 628 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 629         classcheck, reset_others) {
 630
 631         var content = document.getElementById(content_id);
 632
 633         if (!content) {
 634                 alert("[selectTableRows] Element " + content_id + " not found.");
 635                 return;
 636         }
 637
 638         for (i = 0; i < content.rows.length; i++) {
 639                 if (!classcheck || content.rows[i].className.match(classcheck)) {
 640
 641                         if (content.rows[i].id.match(prefix)) {
 642                                 selectTableRow(content.rows[i], do_select);
 643
 644                                 var row_id = content.rows[i].id.replace(prefix, "");
 645                                 var check = document.getElementById(check_prefix + row_id);
 646
 647                                 if (check) {
 648                                         check.checked = do_select;
 649                                 }
 650                         } else if (reset_others) {
 651                                 selectTableRow(content.rows[i], false);
 652
 653                                 var row_id = content.rows[i].id.replace(prefix, "");
 654                                 var check = document.getElementById(check_prefix + row_id);
 655
 656                                 if (check) {
 657                                         check.checked = false;
 658                                 }
 659
 660                         }
 661                 } else if (reset_others) {
 662                         selectTableRow(content.rows[i], false);
 663
 664                         var row_id = content.rows[i].id.replace(prefix, "");
 665                         var check = document.getElementById(check_prefix + row_id);
 666
 667                         if (check) {
 668                                 check.checked = false;
 669                         }
 670
 671                 }
 672         }
 673 }
 674
 675 function getSelectedTableRowIds(content_id, prefix) {
 676
 677         var content = document.getElementById(content_id);
 678
 679         if (!content) {
 680                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 681                 return;
 682         }
 683
 684         var sel_rows = new Array();
 685
 686         for (i = 0; i < content.rows.length; i++) {
 687                 if (content.rows[i].id.match(prefix) &&
 688                                 content.rows[i].className.match("Selected")) {
 689
 690                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 691                         sel_rows.push(row_id);
 692                 }
 693         }
 694
 695         return sel_rows;
 696
 697 }
 698
 699 function toggleSelectRowById(sender, id) {
 700         var row = document.getElementById(id);
 701
 702         if (sender.checked) {
 703                 if (!row.className.match("Selected")) {
 704                         row.className = row.className + "Selected";
 705                 }
 706         } else {
 707                 if (row.className.match("Selected")) {
 708                         row.className = row.className.replace("Selected", "");
 709                 }
 710         }
 711 }
 712
 713 function toggleSelectListRow(sender) {
 714         var parent_row = sender.parentNode;
 715
 716         if (sender.checked) {
 717                 if (!parent_row.className.match("Selected")) {
 718                         parent_row.className = parent_row.className + "Selected";
 719                 }
 720         } else {
 721                 if (parent_row.className.match("Selected")) {
 722                         parent_row.className = parent_row.className.replace("Selected", "");
 723                 }
 724         }
 725 }
 726
 727
 728 function toggleSelectRow(sender) {
 729         var parent_row = sender.parentNode.parentNode;
 730
 731         if (sender.checked) {
 732                 if (!parent_row.className.match("Selected")) {
 733                         parent_row.className = parent_row.className + "Selected";
 734                 }
 735         } else {
 736                 if (parent_row.className.match("Selected")) {
 737                         parent_row.className = parent_row.className.replace("Selected", "");
 738                 }
 739         }
 740 }
 741
 742 function openExternalUrl(url) {
 743         var w = window.open(url);
 744 }
 745
 746 function getRelativeFeedId(list, id, direction, unread_only) {
 747         if (!id) {
 748                 if (direction == "next") {
 749                         for (i = 0; i < list.childNodes.length; i++) {
 750                                 var child = list.childNodes[i];
 751                                 if (child.id && child.id == "feedCatHolder") {
 752                                         if (child.lastChild) {
 753                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
 754                                                 if (cr) return cr;
 755                                         }
 756                                 } else if (child.id && child.id.match("FEEDR-")) {
 757                                         return child.id.replace('FEEDR-', '');
 758                                 }
 759                         }
 760                 }
 761
 762                 // FIXME select last feed doesn't work when only unread feeds are visible
 763
 764                 if (direction == "prev") {
 765                         for (i = list.childNodes.length-1; i >= 0; i--) {
 766                                 var child = list.childNodes[i];
 767                                 if (child.id == "feedCatHolder") {
 768                                         if (child.firstChild) {
 769                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
 770                                                 if (cr) return cr;
 771                                         }
 772                                 } else if (child.id.match("FEEDR-")) {
 773
 774                                         if (getCookie("ttrss_vf_hreadf") == 1) {
 775                                                 if (child.className != "feed") {
 776                                                         alert(child.className);
 777                                                         return child.id.replace('FEEDR-', '');
 778                                                 }
 779                                         } else {
 780                                                         return child.id.replace('FEEDR-', '');
 781                                         }
 782                                 }
 783                         }
 784                 }
 785         } else {
 786
 787                 var feed = list.ownerDocument.getElementById("FEEDR-" + getActiveFeedId());
 788
 789                 if (getCookie("ttrss_vf_hreadf") == 1) {
 790                         unread_only = true;
 791                 }
 792
 793                 if (direction == "next") {
 794
 795                         var e = feed;
 796
 797                         while (e) {
 798
 799                                 if (e.nextSibling) {
 800
 801                                         e = e.nextSibling;
 802
 803                                 } else if (e.parentNode.parentNode.nextSibling) {
 804
 805                                         var this_cat = e.parentNode.parentNode;
 806
 807                                         e = false;
 808
 809                                         if (this_cat && this_cat.nextSibling) {
 810                                                 while (!e && this_cat.nextSibling) {
 811                                                         this_cat = this_cat.nextSibling;
 812                                                         if (this_cat.id == "feedCatHolder") {
 813                                                                 e = this_cat.firstChild.firstChild;
 814                                                         }
 815                                                 }
 816                                         }
 817
 818                                 } else {
 819                                         e = false;
 820                            }
 821
 822                                 if (e) {
 823                                         if (!unread_only || (unread_only && e.className != "feed" &&
 824                                                         e.className != "error"))        {
 825                                                 return e.id.replace("FEEDR-", "");
 826                                         }
 827                                 }
 828                         }
 829
 830                 } else if (direction == "prev") {
 831
 832                         var e = feed;
 833
 834                         while (e) {
 835
 836                                 if (e.previousSibling) {
 837
 838                                         e = e.previousSibling;
 839
 840                                 } else if (e.parentNode.parentNode.previousSibling) {
 841
 842                                         var this_cat = e.parentNode.parentNode;
 843
 844                                         e = false;
 845
 846                                         if (this_cat && this_cat.previousSibling) {
 847                                                 while (!e && this_cat.previousSibling) {
 848                                                         this_cat = this_cat.previousSibling;
 849                                                         if (this_cat.id == "feedCatHolder") {
 850                                                                 e = this_cat.firstChild.lastChild;
 851                                                         }
 852                                                 }
 853                                         }
 854
 855                                 } else {
 856                                         e = false;
 857                            }
 858
 859                                 if (e) {
 860                                         if (!unread_only || (unread_only && e.className != "feed" &&
 861                                                         e.className != "error"))        {
 862                                                 return e.id.replace("FEEDR-", "");
 863                                         }
 864                                 }
 865                         }
 866                 }
 867         }
 868 }
 869
 870 function showBlockElement(id) {
 871         var elem = document.getElementById(id);
 872
 873         if (elem) {
 874                 elem.style.display = "block";
 875         } else {
 876                 alert("[showBlockElement] can't find element with id " + id);
 877         }
 878 }
 879
 880 function hideParentElement(e) {
 881         e.parentNode.style.display = "none";
 882 }
 883
 884 function dropboxSelect(e, v) {
 885         for (i = 0; i < e.length; i++) {
 886                 if (e[i].value == v) {
 887                         e.selectedIndex = i;
 888                         break;
 889                 }
 890         }
 891 }
 892
 893 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
 894 // bugfixed just a little bit :-)
 895 function getURLParam(strParamName){
 896   var strReturn = "";
 897   var strHref = window.location.href;
 898
 899   if (strHref.indexOf("#") == strHref.length-1) {
 900                 strHref = strHref.substring(0, strHref.length-1);
 901   }
 902
 903   if ( strHref.indexOf("?") > -1 ){
 904     var strQueryString = strHref.substr(strHref.indexOf("?"));
 905     var aQueryString = strQueryString.split("&");
 906     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
 907       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
 908         var aParam = aQueryString[iParam].split("=");
 909         strReturn = aParam[1];
 910         break;
 911       }
 912     }
 913   }
 914   return strReturn;
 915 }
 916
 917 function leading_zero(p) {
 918         var s = String(p);
 919         if (s.length == 1) s = "0" + s;
 920         return s;
 921 }
 922
 923 function closeInfoBox(cleanup) {
 924         var box = document.getElementById('infoBox');
 925         var shadow = document.getElementById('infoBoxShadow');
 926
 927         if (shadow) {
 928                 shadow.style.display = "none";
 929         } else if (box) {
 930                 box.style.display = "none";
 931         }
 932
 933         if (cleanup) box.innerHTML = "&nbsp;";
 934
 935         enableHotkeys();
 936
 937 }
 938
 939
 940 function displayDlg(id, param) {
 941
 942         if (!xmlhttp_ready(xmlhttp)) {
 943                 printLockingError();
 944                 return
 945         }
 946
 947         notify("");
 948
 949         xmlhttp.open("GET", "backend.php?op=dlg&id=" +
 950                 param_escape(id) + "&param=" + param_escape(param), true);
 951         xmlhttp.onreadystatechange=infobox_callback;
 952         xmlhttp.send(null);
 953
 954         disableHotkeys();
 955
 956 }
 957
 958 function infobox_submit_callback() {
 959         if (xmlhttp.readyState == 4) {
 960                 closeInfoBox();
 961
 962                 // called from prefs, reload tab
 963                 if (active_tab) {
 964                         selectTab(active_tab, false);
 965                 }
 966
 967                 notify(xmlhttp.responseText);
 968
 969         }
 970 }
 971
 972 function infobox_callback() {
 973         if (xmlhttp.readyState == 4) {
 974                 var box = document.getElementById('infoBox');
 975                 var shadow = document.getElementById('infoBoxShadow');
 976                 if (box) {
 977                         box.innerHTML=xmlhttp.responseText;
 978                         if (shadow) {
 979                                 shadow.style.display = "block";
 980                         } else {
 981                                 box.style.display = "block";
 982                         }
 983                 }
 984         }
 985 }
 986
 987 function qaddFilter() {
 988
 989         if (!xmlhttp_ready(xmlhttp)) {
 990                 printLockingError();
 991                 return
 992         }
 993
 994         var query = Form.serialize("filter_add_form");
 995
 996         xmlhttp.open("GET", "backend.php?" + query, true);
 997         xmlhttp.onreadystatechange=infobox_submit_callback;
 998         xmlhttp.send(null);
 999
1000         return true;
1001 }
1002
1003 function toggleSubmitNotEmpty(e, submit_id) {
1004         try {
1005                 document.getElementById(submit_id).disabled = (e.value == "")
1006         } catch (e) {
1007                 exception_error("toggleSubmitNotEmpty", e);
1008         }
1009 }
1010
1011 function isValidURL(s) {
1012         return s.match("http://") != null || s.match("https://") != null;
1013 }
1014
1015 function qafAdd() {
1016
1017         if (!xmlhttp_ready(xmlhttp)) {
1018                 printLockingError();
1019                 return
1020         }
1021
1022         notify("Adding feed...");
1023
1024         closeInfoBox();
1025
1026         var feeds_doc = window.frames["feeds-frame"].document;
1027
1028         feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1029
1030         var query = Form.serialize("feed_add_form");
1031
1032         xmlhttp.open("GET", "backend.php?" + query, true);
1033         xmlhttp.onreadystatechange=dlg_frefresh_callback;
1034         xmlhttp.send(null);
1035 }
1036
1037 function filterCR(e)
1038 {
1039      var key;
1040
1041      if(window.event)
1042           key = window.event.keyCode;     //IE
1043      else
1044           key = e.which;     //firefox
1045
1046      if(key == 13)
1047           return false;
1048      else
1049           return true;
1050 }
1051