functions.js

   1 var hotkeys_enabled = true;
   2 var xmlhttp_rpc = Ajax.getTransport();
   3 var notify_silent = false;
   4 var last_progress_point = 0;
   5
   6 /* add method to remove element from array */
   7
   8 Array.prototype.remove = function(s) {
   9         for (var i=0; i < this.length; i++) {
  10                 if (s == this[i]) this.splice(i, 1);
  11         }
  12 }
  13
  14 function is_opera() {
  15         return window.opera;
  16 }
  17
  18 function exception_error(location, e, silent) {
  19         var msg;
  20
  21         if (e.fileName) {
  22                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  23
  24                 msg = "Exception: " + e.name + ", " + e.message +
  25                         "\nFunction: " + location + "()" +
  26                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  27
  28         } else if (e.description) {
  29                 msg = "Exception: " + e.description + "\nFunction: " + location + "()";
  30         } else {
  31                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  32         }
  33
  34         debug("<b>EXCEPTION: " + msg + "</b>");
  35
  36         if (!silent) {
  37                 alert(msg);
  38         }
  39 }
  40
  41 function disableHotkeys() {
  42         hotkeys_enabled = false;
  43 }
  44
  45 function enableHotkeys() {
  46         hotkeys_enabled = true;
  47 }
  48
  49 function xmlhttp_ready(obj) {
  50         return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
  51 }
  52
  53 function open_article_callback(transport) {
  54         try {
  55
  56                 if (transport.responseXML) {
  57
  58                         var link = transport.responseXML.getElementsByTagName("link")[0];
  59                         var id = transport.responseXML.getElementsByTagName("id")[0];
  60
  61                         debug("open_article_callback, received link: " + link);
  62
  63                         if (link && id) {
  64
  65                                 var wname = "ttrss_article_" + id.firstChild.nodeValue;
  66
  67                                 debug("link url: " + link.firstChild.nodeValue + ", wname " + wname);
  68
  69                                 var w = window.open(link.firstChild.nodeValue, wname);
  70
  71                                 if (!w) { notify_error("Failed to load article in new window"); }
  72
  73                                 if (id) {
  74                                         id = id.firstChild.nodeValue;
  75                                         if (!document.getElementById("headlinesList")) {
  76                                                 window.setTimeout("toggleUnread(" + id + ", 0)", 100);
  77                                         }
  78                                 }
  79                         } else {
  80                                 notify_error("Can't open article: received invalid article link");
  81                         }
  82                 } else {
  83                         notify_error("Can't open article: received invalid XML");
  84                 }
  85
  86         } catch (e) {
  87                 exception_error("open_article_callback", e);
  88         }
  89 }
  90
  91 function param_escape(arg) {
  92         if (typeof encodeURIComponent != 'undefined')
  93                 return encodeURIComponent(arg);
  94         else
  95                 return escape(arg);
  96 }
  97
  98 function param_unescape(arg) {
  99         if (typeof decodeURIComponent != 'undefined')
 100                 return decodeURIComponent(arg);
 101         else
 102                 return unescape(arg);
 103 }
 104
 105 function delay(gap) {
 106         var then,now;
 107         then=new Date().getTime();
 108         now=then;
 109         while((now-then)<gap) {
 110                 now=new Date().getTime();
 111         }
 112 }
 113
 114 var notify_hide_timerid = false;
 115
 116 function hide_notify() {
 117         var n = document.getElementById("notify");
 118         if (n) {
 119                 n.style.display = "none";
 120         }
 121 }
 122
 123 function notify_silent_next() {
 124         notify_silent = true;
 125 }
 126
 127 function notify_real(msg, no_hide, n_type) {
 128
 129         if (notify_silent) {
 130                 notify_silent = false;
 131                 return;
 132         }
 133
 134         var n = document.getElementById("notify");
 135         var nb = document.getElementById("notify_body");
 136
 137         if (!n || !nb) return;
 138
 139         if (notify_hide_timerid) {
 140                 window.clearTimeout(notify_hide_timerid);
 141         }
 142
 143         if (msg == "") {
 144                 if (n.style.display == "block") {
 145                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 146                 }
 147                 return;
 148         } else {
 149                 n.style.display = "block";
 150         }
 151
 152         /* types:
 153
 154                 1 - generic
 155                 2 - progress
 156                 3 - error
 157                 4 - info
 158
 159         */
 160
 161         if (typeof __ != 'undefined') {
 162                 msg = __(msg);
 163         }
 164
 165         if (n_type == 1) {
 166                 n.className = "notify";
 167         } else if (n_type == 2) {
 168                 n.className = "notifyProgress";
 169                 msg = "<img src='images/indicator_white.gif'> " + msg;
 170         } else if (n_type == 3) {
 171                 n.className = "notifyError";
 172                 msg = "<img src='images/sign_excl.gif'> " + msg;
 173         } else if (n_type == 4) {
 174                 n.className = "notifyInfo";
 175                 msg = "<img src='images/sign_info.gif'> " + msg;
 176         }
 177
 178 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 179
 180         nb.innerHTML = msg;
 181
 182         if (!no_hide) {
 183                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 184         }
 185 }
 186
 187 function notify(msg, no_hide) {
 188         notify_real(msg, no_hide, 1);
 189 }
 190
 191 function notify_progress(msg, no_hide) {
 192         notify_real(msg, no_hide, 2);
 193 }
 194
 195 function notify_error(msg, no_hide) {
 196         notify_real(msg, no_hide, 3);
 197
 198 }
 199
 200 function notify_info(msg, no_hide) {
 201         notify_real(msg, no_hide, 4);
 202 }
 203
 204 function printLockingError() {
 205         notify_info("Please wait until operation finishes.");
 206 }
 207
 208 function cleanSelected(element) {
 209         var content = document.getElementById(element);
 210
 211         for (i = 0; i < content.rows.length; i++) {
 212                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 213         }
 214 }
 215
 216 function getVisibleUnreadHeadlines() {
 217         var content = document.getElementById("headlinesList");
 218
 219         var rows = new Array();
 220
 221         if (!content) return rows;
 222
 223         for (i = 0; i < content.rows.length; i++) {
 224                 var row_id = content.rows[i].id.replace("RROW-", "");
 225                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 226                                 rows.push(row_id);
 227                 }
 228         }
 229         return rows;
 230 }
 231
 232 function getVisibleHeadlineIds() {
 233
 234         var content = document.getElementById("headlinesList");
 235
 236         var rows = new Array();
 237
 238         if (!content) return rows;
 239
 240         for (i = 0; i < content.rows.length; i++) {
 241                 var row_id = content.rows[i].id.replace("RROW-", "");
 242                 if (row_id.length > 0) {
 243                                 rows.push(row_id);
 244                 }
 245         }
 246         return rows;
 247 }
 248
 249 function getFirstVisibleHeadlineId() {
 250         if (isCdmMode()) {
 251                 var rows = cdmGetVisibleArticles();
 252                 return rows[0];
 253         } else {
 254                 var rows = getVisibleHeadlineIds();
 255                 return rows[0];
 256         }
 257 }
 258
 259 function getLastVisibleHeadlineId() {
 260         if (isCdmMode()) {
 261                 var rows = cdmGetVisibleArticles();
 262                 return rows[rows.length-1];
 263         } else {
 264                 var rows = getVisibleHeadlineIds();
 265                 return rows[rows.length-1];
 266         }
 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(d.getTime() + (lifetime * 1000));
 318         }
 319
 320         debug("setCookie: " + name + " => " + value + ": " + d);
 321
 322         int_setCookie(name, value, d, path, domain, secure);
 323
 324 }
 325
 326 function int_setCookie(name, value, expires, path, domain, secure) {
 327         document.cookie= name + "=" + escape(value) +
 328                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 329                 ((path) ? "; path=" + path : "") +
 330                 ((domain) ? "; domain=" + domain : "") +
 331                 ((secure) ? "; secure" : "");
 332 }
 333
 334 function delCookie(name, path, domain) {
 335         if (getCookie(name)) {
 336                 document.cookie = name + "=" +
 337                 ((path) ? ";path=" + path : "") +
 338                 ((domain) ? ";domain=" + domain : "" ) +
 339                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 340         }
 341 }
 342
 343
 344 function getCookie(name) {
 345
 346         var dc = document.cookie;
 347         var prefix = name + "=";
 348         var begin = dc.indexOf("; " + prefix);
 349         if (begin == -1) {
 350             begin = dc.indexOf(prefix);
 351             if (begin != 0) return null;
 352         }
 353         else {
 354             begin += 2;
 355         }
 356         var end = document.cookie.indexOf(";", begin);
 357         if (end == -1) {
 358             end = dc.length;
 359         }
 360         return unescape(dc.substring(begin + prefix.length, end));
 361 }
 362
 363 function disableContainerChildren(id, disable, doc) {
 364
 365         if (!doc) doc = document;
 366
 367         var container = doc.getElementById(id);
 368
 369         if (!container) {
 370                 //alert("disableContainerChildren: element " + id + " not found");
 371                 return;
 372         }
 373
 374         for (var i = 0; i < container.childNodes.length; i++) {
 375                 var child = container.childNodes[i];
 376
 377                 try {
 378                         child.disabled = disable;
 379                 } catch (E) {
 380
 381                 }
 382
 383                 if (disable) {
 384                         if (child.className && child.className.match("button")) {
 385                                 child.className = "disabledButton";
 386                         }
 387                 } else {
 388                         if (child.className && child.className.match("disabledButton")) {
 389                                 child.className = "button";
 390                         }
 391                 }
 392         }
 393
 394 }
 395
 396 function gotoPreferences() {
 397         document.location.href = "prefs.php";
 398 }
 399
 400 function gotoMain() {
 401         document.location.href = "tt-rss.php";
 402 }
 403
 404 function gotoExportOpml() {
 405         document.location.href = "opml.php?op=Export";
 406 }
 407
 408 function getActiveFeedId() {
 409 //      return getCookie("ttrss_vf_actfeed");
 410         try {
 411                 debug("gAFID: " + active_feed_id);
 412                 return active_feed_id;
 413         } catch (e) {
 414                 exception_error("getActiveFeedId", e);
 415         }
 416 }
 417
 418 function activeFeedIsCat() {
 419         return active_feed_is_cat;
 420 }
 421
 422 function setActiveFeedId(id) {
 423 //      return setCookie("ttrss_vf_actfeed", id);
 424         try {
 425                 debug("sAFID(" + id + ")");
 426                 active_feed_id = id;
 427         } catch (e) {
 428                 exception_error("setActiveFeedId", e);
 429         }
 430 }
 431
 432 function parse_counters(reply, scheduled_call) {
 433         try {
 434
 435                 var feeds_found = 0;
 436
 437                 var elems = reply.getElementsByTagName("counter");
 438
 439                 for (var l = 0; l < elems.length; l++) {
 440
 441                         var id = elems[l].getAttribute("id");
 442                         var t = elems[l].getAttribute("type");
 443                         var ctr = elems[l].getAttribute("counter");
 444                         var error = elems[l].getAttribute("error");
 445                         var has_img = elems[l].getAttribute("hi");
 446                         var updated = elems[l].getAttribute("updated");
 447                         var title = elems[l].getAttribute("title");
 448                         var xmsg = elems[l].getAttribute("xmsg");
 449
 450                         if (id == "global-unread") {
 451                                 global_unread = ctr;
 452                                 updateTitle();
 453                                 continue;
 454                         }
 455
 456                         if (id == "subscribed-feeds") {
 457                                 feeds_found = ctr;
 458                                 continue;
 459                         }
 460
 461                         if (t == "category") {
 462                                 var catctr = document.getElementById("FCATCTR-" + id);
 463                                 if (catctr) {
 464                                         catctr.innerHTML = "(" + ctr + ")";
 465                                         if (ctr > 0) {
 466                                                 catctr.className = "catCtrHasUnread";
 467                                         } else {
 468                                                 catctr.className = "catCtrNoUnread";
 469                                         }
 470                                 }
 471                                 continue;
 472                         }
 473
 474                         var feedctr = document.getElementById("FEEDCTR-" + id);
 475                         var feedu = document.getElementById("FEEDU-" + id);
 476                         var feedr = document.getElementById("FEEDR-" + id);
 477                         var feed_img = document.getElementById("FIMG-" + id);
 478                         var feedlink = document.getElementById("FEEDL-" + id);
 479                         var feedupd = document.getElementById("FLUPD-" + id);
 480
 481                         if (updated && feedlink) {
 482                                 if (error) {
 483                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 484                                 } else {
 485                                         feedlink.title = "Updated: " + updated;
 486                                 }
 487                         }
 488
 489                         if (feedupd) {
 490                                 if (!updated) updated = "";
 491
 492                                 if (error) {
 493                                         if (xmsg) {
 494                                                 feedupd.innerHTML = updated + " " + xmsg + " (Error)";
 495                                         } else {
 496                                                 feedupd.innerHTML = updated + " (Error)";
 497                                         }
 498                                 } else {
 499                                         if (xmsg) {
 500                                                 feedupd.innerHTML = updated + " " + xmsg;
 501                                         } else {
 502                                                 feedupd.innerHTML = updated;
 503                                         }
 504                                 }
 505                         }
 506
 507                         if (has_img && feed_img) {
 508                                 if (!feed_img.src.match(id + ".ico")) {
 509                                         feed_img.src = getInitParam("icons_location") + "/" + id + ".ico";
 510                                 }
 511                         }
 512
 513                         if (feedlink && title) {
 514                                 feedlink.innerHTML = title;
 515                         }
 516
 517                         if (feedctr && feedu && feedr) {
 518
 519                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 520                                         viewCurrentFeed();
 521                                 }
 522
 523                                 var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 524
 525                                 feedu.innerHTML = ctr;
 526
 527                                 if (error) {
 528                                         feedr.className = feedr.className.replace("feed", "error");
 529                                 } else if (id > 0) {
 530                                         feedr.className = feedr.className.replace("error", "feed");
 531                                 }
 532
 533                                 if (ctr > 0) {
 534                                         feedctr.className = "odd";
 535                                         if (!feedr.className.match("Unread")) {
 536                                                 var is_selected = feedr.className.match("Selected");
 537
 538                                                 feedr.className = feedr.className.replace("Selected", "");
 539                                                 feedr.className = feedr.className.replace("Unread", "");
 540
 541                                                 feedr.className = feedr.className + "Unread";
 542
 543                                                 if (is_selected) {
 544                                                         feedr.className = feedr.className + "Selected";
 545                                                 }
 546
 547                                         }
 548
 549                                         if (row_needs_hl) {
 550                                                 new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 551                                                         queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 552                                         }
 553                                 } else {
 554                                         feedctr.className = "invisible";
 555                                         feedr.className = feedr.className.replace("Unread", "");
 556                                 }
 557                         }
 558                 }
 559
 560                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 561
 562                 var feeds_stored = number_of_feeds;
 563
 564                 debug("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 565
 566                 if (feeds_stored != feeds_found) {
 567                         number_of_feeds = feeds_found;
 568
 569                         if (feeds_stored != 0 && feeds_found != 0) {
 570                                 debug("Subscribed feed number changed, refreshing feedlist");
 571                                 setTimeout('updateFeedList(false, false)', 50);
 572                         }
 573                 }
 574
 575         } catch (e) {
 576                 exception_error("parse_counters", e);
 577         }
 578 }
 579
 580 function parse_counters_reply(transport, scheduled_call) {
 581
 582         if (!transport.responseXML) {
 583                 notify_error("Backend did not return valid XML", true);
 584                 return;
 585         }
 586
 587         var reply = transport.responseXML.firstChild;
 588
 589         if (!reply) {
 590                 notify_error("Backend did not return expected XML object", true);
 591                 updateTitle("");
 592                 return;
 593         }
 594
 595         var error_code = false;
 596         var error_msg = false;
 597
 598         if (reply.firstChild) {
 599                 error_code = reply.firstChild.getAttribute("error-code");
 600                 error_msg = reply.firstChild.getAttribute("error-msg");
 601         }
 602
 603         if (!error_code) {
 604                 error_code = reply.getAttribute("error-code");
 605                 error_msg = reply.getAttribute("error-msg");
 606         }
 607
 608         if (error_code && error_code != 0) {
 609                 debug("refetch_callback: got error code " + error_code);
 610                 return fatalError(error_code, error_msg);
 611         }
 612
 613         var counters = reply.getElementsByTagName("counters")[0];
 614
 615         parse_counters(counters, scheduled_call);
 616
 617         var runtime_info = reply.getElementsByTagName("runtime-info")[0];
 618
 619         parse_runtime_info(runtime_info);
 620
 621         if (feedsSortByUnread()) {
 622                 resort_feedlist();
 623         }
 624
 625         hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 626
 627 }
 628
 629 function all_counters_callback2(transport) {
 630         try {
 631                 debug("<b>all_counters_callback2 IN: " + transport + "</b>");
 632                 parse_counters_reply(transport);
 633                 debug("<b>all_counters_callback2 OUT: " + transport + "</b>");
 634
 635         } catch (e) {
 636                 exception_error("all_counters_callback2", e);
 637         }
 638 }
 639
 640 function get_feed_unread(id) {
 641         try {
 642                 return parseInt(document.getElementById("FEEDU-" + id).innerHTML);
 643         } catch (e) {
 644                 exception_error("get_feed_unread", e, true);
 645                 return -1;
 646         }
 647 }
 648
 649 function get_feed_entry_unread(elem) {
 650
 651         var id = elem.id.replace("FEEDR-", "");
 652
 653         if (id <= 0) {
 654                 return -1;
 655         }
 656
 657         try {
 658                 return parseInt(document.getElementById("FEEDU-" + id).innerHTML);
 659         } catch (e) {
 660                 return -1;
 661         }
 662 }
 663
 664 function get_feed_entry_name(elem) {
 665         var id = elem.id.replace("FEEDR-", "");
 666         return getFeedName(id);
 667 }
 668
 669
 670 function resort_category(node) {
 671         debug("resort_category: " + node);
 672
 673         var by_unread = feedsSortByUnread();
 674
 675         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 676                 for (i = 0; i < node.childNodes.length; i++) {
 677                         if (node.childNodes[i].nodeName != "LI") { continue; }
 678
 679                         if (get_feed_entry_unread(node.childNodes[i]) < 0) {
 680                                 continue;
 681                         }
 682
 683                         for (j = i+1; j < node.childNodes.length; j++) {
 684                                 if (node.childNodes[j].nodeName != "LI") { continue; }
 685
 686                                 var tmp_val = get_feed_entry_unread(node.childNodes[i]);
 687                                 var cur_val = get_feed_entry_unread(node.childNodes[j]);
 688
 689                                 var tmp_name = get_feed_entry_name(node.childNodes[i]);
 690                                 var cur_name = get_feed_entry_name(node.childNodes[j]);
 691
 692                                 if ((by_unread && (cur_val > tmp_val)) || (!by_unread && (cur_name < tmp_name))) {
 693                                         tempnode_i = node.childNodes[i].cloneNode(true);
 694                                         tempnode_j = node.childNodes[j].cloneNode(true);
 695                                         node.replaceChild(tempnode_i, node.childNodes[j]);
 696                                         node.replaceChild(tempnode_j, node.childNodes[i]);
 697                                 }
 698                         }
 699
 700                 }
 701         }
 702
 703 }
 704
 705 function resort_feedlist() {
 706         debug("resort_feedlist");
 707
 708         if (document.getElementById("FCATLIST--1")) {
 709
 710                 var lists = document.getElementsByTagName("UL");
 711
 712                 for (var i = 0; i < lists.length; i++) {
 713                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 714                                 resort_category(lists[i]);
 715                         }
 716                 }
 717
 718         } else {
 719                 resort_category(document.getElementById("feedList"));
 720         }
 721 }
 722
 723 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 724   * * @author Sundar Dorai-Raj
 725   * * Email: sdoraira@vt.edu
 726   * * This program is free software; you can redistribute it and/or
 727   * * modify it under the terms of the GNU General Public License
 728   * * as published by the Free Software Foundation; either version 2
 729   * * of the License, or (at your option) any later version,
 730   * * provided that any use properly credits the author.
 731   * * This program is distributed in the hope that it will be useful,
 732   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 733   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 734   * * GNU General Public License for more details at http://www.gnu.org * * */
 735
 736   var numbers=".0123456789";
 737   function isNumeric(x) {
 738     // is x a String or a character?
 739     if(x.length>1) {
 740       // remove negative sign
 741       x=Math.abs(x)+"";
 742       for(j=0;j<x.length;j++) {
 743         // call isNumeric recursively for each character
 744         number=isNumeric(x.substring(j,j+1));
 745         if(!number) return number;
 746       }
 747       return number;
 748     }
 749     else {
 750       // if x is number return true
 751       if(numbers.indexOf(x)>=0) return true;
 752       return false;
 753     }
 754   }
 755
 756
 757 function hideOrShowFeeds(hide) {
 758
 759         try {
 760
 761         debug("hideOrShowFeeds: " + hide);
 762
 763         if (document.getElementById("FCATLIST--1")) {
 764
 765                 var lists = document.getElementsByTagName("UL");
 766
 767                 for (var i = 0; i < lists.length; i++) {
 768                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 769
 770                                 var id = lists[i].id.replace("FCATLIST-", "");
 771                                 hideOrShowFeedsCategory(id, hide);
 772                         }
 773                 }
 774
 775         } else {
 776                 hideOrShowFeedsCategory(null, hide);
 777         }
 778
 779         } catch (e) {
 780                 exception_error("hideOrShowFeeds", e);
 781         }
 782 }
 783
 784 function hideOrShowFeedsCategory(id, hide) {
 785
 786         try {
 787
 788                 var node = null;
 789                 var cat_node = null;
 790
 791                 if (id) {
 792                         node = document.getElementById("FCATLIST-" + id);
 793                         cat_node = document.getElementById("FCAT-" + id);
 794                 } else {
 795                         node = document.getElementById("feedList"); // no categories
 796                 }
 797
 798         //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 799
 800                 var cat_unread = 0;
 801
 802                 if (!node) {
 803                         debug("hideOrShowFeeds: passed node is null, aborting");
 804                         return;
 805                 }
 806
 807         //      debug("cat: " + node.id);
 808
 809                 if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 810                         for (i = 0; i < node.childNodes.length; i++) {
 811                                 if (node.childNodes[i].nodeName != "LI") { continue; }
 812
 813                                 if (node.childNodes[i].style != undefined) {
 814
 815                                         var has_unread = (node.childNodes[i].className != "feed" &&
 816                                                 node.childNodes[i].className != "label" &&
 817                                                 !(!getInitParam("hide_read_shows_special") &&
 818                                                         node.childNodes[i].className == "virt") &&
 819                                                 node.childNodes[i].className != "error" &&
 820                                                 node.childNodes[i].className != "tag");
 821
 822         //                              debug(node.childNodes[i].id + " --> " + has_unread);
 823
 824                                         if (hide && !has_unread) {
 825                                                 //node.childNodes[i].style.display = "none";
 826                                                 var id = node.childNodes[i].id;
 827                                                 Effect.Fade(node.childNodes[i], {duration : 0.3,
 828                                                         queue: { position: 'end', scope: 'FFADE-' + id, limit: 1 }});
 829                                         }
 830
 831                                         if (!hide) {
 832                                                 node.childNodes[i].style.display = "list-item";
 833                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 834                                         }
 835
 836                                         if (has_unread) {
 837                                                 node.childNodes[i].style.display = "list-item";
 838                                                 cat_unread++;
 839                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 840                                                 //Effect.Highlight(node.childNodes[i]);
 841                                         }
 842                                 }
 843                         }
 844                 }
 845
 846         //      debug("end cat: " + node.id + " unread " + cat_unread);
 847
 848                 if (cat_unread == 0) {
 849                         if (cat_node.style == undefined) {
 850                                 debug("ERROR: supplied cat_node " + cat_node +
 851                                         " has no styles. WTF?");
 852                                 return;
 853                         }
 854                         if (hide) {
 855                                 //cat_node.style.display = "none";
 856                                 Effect.Fade(cat_node, {duration : 0.3,
 857                                         queue: { position: 'end', scope: 'CFADE-' + node.id, limit: 1 }});
 858                         } else {
 859                                 cat_node.style.display = "list-item";
 860                         }
 861                 } else {
 862                         try {
 863                                 cat_node.style.display = "list-item";
 864                         } catch (e) {
 865                                 debug(e);
 866                         }
 867                 }
 868
 869 //      debug("unread for category: " + cat_unread);
 870
 871         } catch (e) {
 872                 exception_error("hideOrShowFeedsCategory", e);
 873         }
 874 }
 875
 876 function selectTableRow(r, do_select) {
 877         r.className = r.className.replace("Selected", "");
 878
 879         if (do_select) {
 880                 r.className = r.className + "Selected";
 881         }
 882 }
 883
 884 function selectTableRowById(elem_id, check_id, do_select) {
 885
 886         try {
 887
 888                 var row = document.getElementById(elem_id);
 889
 890                 if (row) {
 891                         selectTableRow(row, do_select);
 892                 }
 893
 894                 var check = document.getElementById(check_id);
 895
 896                 if (check) {
 897                         check.checked = do_select;
 898                 }
 899         } catch (e) {
 900                 exception_error("selectTableRowById", e);
 901         }
 902 }
 903
 904 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 905         classcheck, reset_others) {
 906
 907         var content = document.getElementById(content_id);
 908
 909         if (!content) {
 910                 alert("[selectTableRows] Element " + content_id + " not found.");
 911                 return;
 912         }
 913
 914         for (i = 0; i < content.rows.length; i++) {
 915                 if (Element.visible(content.rows[i])) {
 916                         if (!classcheck || content.rows[i].className.match(classcheck)) {
 917
 918                                 if (content.rows[i].id.match(prefix)) {
 919                                         selectTableRow(content.rows[i], do_select);
 920
 921                                         var row_id = content.rows[i].id.replace(prefix, "");
 922                                         var check = document.getElementById(check_prefix + row_id);
 923
 924                                         if (check) {
 925                                                 check.checked = do_select;
 926                                         }
 927                                 } else if (reset_others) {
 928                                         selectTableRow(content.rows[i], false);
 929
 930                                         var row_id = content.rows[i].id.replace(prefix, "");
 931                                         var check = document.getElementById(check_prefix + row_id);
 932
 933                                         if (check) {
 934                                                 check.checked = false;
 935                                         }
 936
 937                                 }
 938                         } else if (reset_others) {
 939                                 selectTableRow(content.rows[i], false);
 940
 941                                 var row_id = content.rows[i].id.replace(prefix, "");
 942                                 var check = document.getElementById(check_prefix + row_id);
 943
 944                                 if (check) {
 945                                         check.checked = false;
 946                                 }
 947
 948                         }
 949                 }
 950         }
 951 }
 952
 953 function getSelectedTableRowIds(content_id, prefix) {
 954
 955         var content = document.getElementById(content_id);
 956
 957         if (!content) {
 958                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 959                 return;
 960         }
 961
 962         var sel_rows = new Array();
 963
 964         for (i = 0; i < content.rows.length; i++) {
 965                 if (content.rows[i].id.match(prefix) &&
 966                                 content.rows[i].className.match("Selected")) {
 967
 968                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 969                         sel_rows.push(row_id);
 970                 }
 971         }
 972
 973         return sel_rows;
 974
 975 }
 976
 977 function toggleSelectRowById(sender, id) {
 978         var row = document.getElementById(id);
 979
 980         if (sender.checked) {
 981                 if (!row.className.match("Selected")) {
 982                         row.className = row.className + "Selected";
 983                 }
 984         } else {
 985                 if (row.className.match("Selected")) {
 986                         row.className = row.className.replace("Selected", "");
 987                 }
 988         }
 989 }
 990
 991 function toggleSelectListRow(sender) {
 992         var parent_row = sender.parentNode;
 993
 994         if (sender.checked) {
 995                 if (!parent_row.className.match("Selected")) {
 996                         parent_row.className = parent_row.className + "Selected";
 997                 }
 998         } else {
 999                 if (parent_row.className.match("Selected")) {
1000                         parent_row.className = parent_row.className.replace("Selected", "");
1001                 }
1002         }
1003 }
1004
1005 function tSR(sender) {
1006         return toggleSelectRow(sender);
1007 }
1008
1009 function toggleSelectRow(sender) {
1010         var parent_row = sender.parentNode.parentNode;
1011
1012         if (sender.checked) {
1013                 if (!parent_row.className.match("Selected")) {
1014                         parent_row.className = parent_row.className + "Selected";
1015                 }
1016         } else {
1017                 if (parent_row.className.match("Selected")) {
1018                         parent_row.className = parent_row.className.replace("Selected", "");
1019                 }
1020         }
1021 }
1022
1023 function getRelativeFeedId(list, id, direction, unread_only) {
1024         var rows = list.getElementsByTagName("LI");
1025         var feeds = new Array();
1026
1027         for (var i = 0; i < rows.length; i++) {
1028                 if (rows[i].id.match("FEEDR-")) {
1029
1030                         if (rows[i].id == "FEEDR-" + id || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1031
1032                                 if (!unread_only ||
1033                                                 (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1034                                         feeds.push(rows[i].id.replace("FEEDR-", ""));
1035                                 }
1036                         }
1037                 }
1038         }
1039
1040         if (!id) {
1041                 if (direction == "next") {
1042                         return feeds.shift();
1043                 } else {
1044                         return feeds.pop();
1045                 }
1046         } else {
1047                 if (direction == "next") {
1048                         var idx = feeds.indexOf(id);
1049                         if (idx != -1 && idx < feeds.length) {
1050                                 return feeds[idx+1];
1051                         } else {
1052                                 return getRelativeFeedId(list, false, direction, unread_only);
1053                         }
1054                 } else {
1055                         var idx = feeds.indexOf(id);
1056                         if (idx > 0) {
1057                                 return feeds[idx-1];
1058                         } else {
1059                                 return getRelativeFeedId(list, false, direction, unread_only);
1060                         }
1061                 }
1062
1063         }
1064 }
1065
1066 function showBlockElement(id, h_id) {
1067         var elem = document.getElementById(id);
1068
1069         if (elem) {
1070                 elem.style.display = "block";
1071
1072                 if (h_id) {
1073                         elem = document.getElementById(h_id);
1074                         if (elem) {
1075                                 elem.style.display = "none";
1076                         }
1077                 }
1078         } else {
1079                 alert("[showBlockElement] can't find element with id " + id);
1080         }
1081 }
1082
1083 function appearBlockElement_afh(effect) {
1084
1085 }
1086
1087 function checkboxToggleElement(elem, id) {
1088         if (elem.checked) {
1089                 Effect.SlideDown(id, {duration : 0.5});
1090         } else {
1091                 Effect.SlideUp(id, {duration : 0.5});
1092         }
1093 }
1094
1095 function appearBlockElement(id, h_id) {
1096
1097         try {
1098                 if (h_id) {
1099                         Effect.Fade(h_id);
1100                 }
1101                 Effect.SlideDown(id, {duration : 1.0, afterFinish: appearBlockElement_afh});
1102         } catch (e) {
1103                 exception_error("appearBlockElement", e);
1104         }
1105
1106 }
1107
1108 function hideParentElement(e) {
1109         e.parentNode.style.display = "none";
1110 }
1111
1112 function dropboxSelect(e, v) {
1113         for (i = 0; i < e.length; i++) {
1114                 if (e[i].value == v) {
1115                         e.selectedIndex = i;
1116                         break;
1117                 }
1118         }
1119 }
1120
1121 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1122 // bugfixed just a little bit :-)
1123 function getURLParam(strParamName){
1124   var strReturn = "";
1125   var strHref = window.location.href;
1126
1127   if (strHref.indexOf("#") == strHref.length-1) {
1128                 strHref = strHref.substring(0, strHref.length-1);
1129   }
1130
1131   if ( strHref.indexOf("?") > -1 ){
1132     var strQueryString = strHref.substr(strHref.indexOf("?"));
1133     var aQueryString = strQueryString.split("&");
1134     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1135       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1136         var aParam = aQueryString[iParam].split("=");
1137         strReturn = aParam[1];
1138         break;
1139       }
1140     }
1141   }
1142   return strReturn;
1143 }
1144
1145 function leading_zero(p) {
1146         var s = String(p);
1147         if (s.length == 1) s = "0" + s;
1148         return s;
1149 }
1150
1151 function closeInfoBox(cleanup) {
1152
1153         Element.hide("dialog_overlay");
1154
1155         var box = document.getElementById('infoBox');
1156         var shadow = document.getElementById('infoBoxShadow');
1157
1158         if (shadow) {
1159                 shadow.style.display = "none";
1160         } else if (box) {
1161                 box.style.display = "none";
1162         }
1163
1164         if (cleanup) box.innerHTML = "&nbsp;";
1165
1166         enableHotkeys();
1167
1168         return false;
1169 }
1170
1171
1172 function displayDlg(id, param) {
1173
1174         notify_progress("Loading, please wait...", true);
1175
1176         disableHotkeys();
1177
1178         var query = "backend.php?op=dlg&id=" +
1179                 param_escape(id) + "&param=" + param_escape(param);
1180
1181         new Ajax.Request(query, {
1182                 onComplete: function (transport) {
1183                         infobox_callback2(transport);
1184                 } });
1185
1186         return false;
1187 }
1188
1189 function infobox_submit_callback2(transport) {
1190         closeInfoBox();
1191
1192         try {
1193                 // called from prefs, reload tab
1194                 if (typeof active_tab != 'undefined' && active_tab) {
1195                         selectTab(active_tab, false);
1196                 }
1197         } catch (e) { }
1198
1199         if (transport.responseText) {
1200                 notify_info(transport.responseText);
1201         }
1202 }
1203
1204 function infobox_callback2(transport) {
1205         try {
1206
1207                 debug("infobox_callback2");
1208
1209                 if (!getInitParam("infobox_disable_overlay")) {
1210                         Element.show("dialog_overlay");
1211                 }
1212
1213                 var box = document.getElementById('infoBox');
1214                 var shadow = document.getElementById('infoBoxShadow');
1215                 if (box) {
1216
1217                         box.innerHTML=transport.responseText;
1218                         if (shadow) {
1219                                 shadow.style.display = "block";
1220                         } else {
1221                                 box.style.display = "block";
1222                         }
1223                 }
1224
1225                 /* FIXME this needs to be moved out somewhere */
1226
1227                 if (document.getElementById("tags_choices")) {
1228                         new Ajax.Autocompleter('tags_str', 'tags_choices',
1229                                 "backend.php?op=rpc&subop=completeTags",
1230                                 { tokens: ',', paramName: "search" });
1231                 }
1232
1233                 disableHotkeys();
1234
1235                 notify("");
1236         } catch (e) {
1237                 exception_error("infobox_callback2", e);
1238         }
1239 }
1240
1241 function createFilter() {
1242
1243         try {
1244
1245                 var form = document.forms['filter_add_form'];
1246                 var reg_exp = form.reg_exp.value;
1247
1248                 if (reg_exp == "") {
1249                         alert(__("Can't add filter: nothing to match on."));
1250                         return false;
1251                 }
1252
1253                 var query = Form.serialize("filter_add_form");
1254
1255                 // we can be called from some other tab in Prefs
1256                 if (typeof active_tab != 'undefined' && active_tab) {
1257                         active_tab = "filterConfig";
1258                 }
1259
1260                 new Ajax.Request("backend.php?" + query, {
1261                         onComplete: function (transport) {
1262                                 infobox_submit_callback2(transport);
1263                         } });
1264
1265                 return true;
1266
1267         } catch (e) {
1268                 exception_error("createFilter", e);
1269         }
1270 }
1271
1272 function toggleSubmitNotEmpty(e, submit_id) {
1273         try {
1274                 document.getElementById(submit_id).disabled = (e.value == "")
1275         } catch (e) {
1276                 exception_error("toggleSubmitNotEmpty", e);
1277         }
1278 }
1279
1280 function isValidURL(s) {
1281         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1282 }
1283
1284 function subscribeToFeed() {
1285
1286         var form = document.forms['feed_add_form'];
1287         var feed_url = form.feed_url.value;
1288
1289         if (feed_url == "") {
1290                 alert(__("Can't subscribe: no feed URL given."));
1291                 return false;
1292         }
1293
1294         notify_progress(__("Subscribing to feed..."), true);
1295
1296         closeInfoBox();
1297
1298         var feeds_doc = document;
1299
1300 //      feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1301
1302         var query = Form.serialize("feed_add_form");
1303
1304         debug("subscribe q: " + query);
1305
1306         new Ajax.Request("backend.php", {
1307                 parameters: query,
1308                 onComplete: function(transport) {
1309                         dlg_frefresh_callback(transport);
1310                 } });
1311
1312         return false;
1313 }
1314
1315 function filterCR(e, f)
1316 {
1317      var key;
1318
1319      if(window.event)
1320           key = window.event.keyCode;     //IE
1321      else
1322           key = e.which;     //firefox
1323
1324         if (key == 13) {
1325                 if (typeof f != 'undefined') {
1326                         f();
1327                         return false;
1328                 } else {
1329                         return false;
1330                 }
1331         } else {
1332                 return true;
1333         }
1334 }
1335
1336 function getMainContext() {
1337         return this.window;
1338 }
1339
1340 function getFeedsContext() {
1341         return this.window;
1342 }
1343
1344 function getContentContext() {
1345         return this.window;
1346 }
1347
1348 function getHeadlinesContext() {
1349         return this.window;
1350 }
1351
1352 var debug_last_class = "even";
1353
1354 function debug(msg) {
1355
1356         if (debug_last_class == "even") {
1357                 debug_last_class = "odd";
1358         } else {
1359                 debug_last_class = "even";
1360         }
1361
1362         var c = document.getElementById('debug_output');
1363         if (c && Element.visible(c)) {
1364                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1365                         c.removeChild(c.lastChild);
1366                 }
1367
1368                 var d = new Date();
1369                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1370                         ":" + leading_zero(d.getSeconds());
1371                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1372                         msg + "</li>" + c.innerHTML;
1373         }
1374 }
1375
1376 function getInitParam(key) {
1377         return init_params[key];
1378 }
1379
1380 function storeInitParam(key, value) {
1381         debug("<b>storeInitParam is OBSOLETE: " + key + " => " + value + "</b>");
1382         init_params[key] = value;
1383 }
1384
1385 function fatalError(code, message) {
1386         try {
1387
1388                 if (code == 6) {
1389                         window.location.href = "tt-rss.php";
1390                 } else if (code == 5) {
1391                         window.location.href = "update.php";
1392                 } else {
1393                         var fe = document.getElementById("fatal_error");
1394                         var fc = document.getElementById("fatal_error_msg");
1395
1396                         if (message == "") message = "Unknown error";
1397
1398                         fc.innerHTML = "<img src='images/sign_excl.gif'> " + message + " (Code " + code + ")";
1399
1400                         fe.style.display = "block";
1401                 }
1402
1403         } catch (e) {
1404                 exception_error("fatalError", e);
1405         }
1406 }
1407
1408 function getFeedName(id, is_cat) {
1409         var d = getFeedsContext().document;
1410
1411         var e;
1412
1413         if (is_cat) {
1414                 e = d.getElementById("FCATN-" + id);
1415         } else {
1416                 e = d.getElementById("FEEDN-" + id);
1417         }
1418         if (e) {
1419                 return e.innerHTML.stripTags();
1420         } else {
1421                 return null;
1422         }
1423 }
1424
1425 function viewContentUrl(url) {
1426         getContentContext().location = url;
1427 }
1428
1429 function filterDlgCheckAction(sender) {
1430
1431         try {
1432
1433                 var action = sender[sender.selectedIndex].value;
1434
1435                 var form = document.forms["filter_add_form"];
1436
1437                 if (!form) {
1438                         form = document.forms["filter_edit_form"];
1439                 }
1440
1441                 if (!form) {
1442                         debug("filterDlgCheckAction: can't find form!");
1443                         return;
1444                 }
1445
1446                 var action_param = form.action_param;
1447
1448                 if (!action_param) {
1449                         debug("filterDlgCheckAction: can't find action param!");
1450                         return;
1451                 }
1452
1453                 // if selected action supports parameters, enable params field
1454                 if (action == 4 || action == 6) {
1455                         action_param.disabled = false;
1456                 } else {
1457                         action_param.disabled = true;
1458                 }
1459
1460         } catch (e) {
1461                 exception_error("filterDlgCheckAction", e);
1462         }
1463
1464 }
1465
1466 function explainError(code) {
1467         return displayDlg("explainError", code);
1468 }
1469
1470 // this only searches loaded headlines list, not in CDM
1471 function getRelativePostIds(id, limit) {
1472
1473         if (!limit) limit = 3;
1474
1475         debug("getRelativePostIds: " + id + " limit=" + limit);
1476
1477         var ids = new Array();
1478         var container = document.getElementById("headlinesList");
1479
1480         if (container) {
1481                 var rows = container.rows;
1482
1483                 for (var i = 0; i < rows.length; i++) {
1484                         var r_id = rows[i].id.replace("RROW-", "");
1485
1486                         if (r_id == id) {
1487                                 for (var k = 1; k <= limit; k++) {
1488                                         var nid = false;
1489
1490                                         if (i > k-1) var nid = rows[i-k].id.replace("RROW-", "");
1491                                         if (nid) ids.push(nid);
1492
1493                                         if (i < rows.length-k) nid = rows[i+k].id.replace("RROW-", "");
1494                                         if (nid) ids.push(nid);
1495                                 }
1496
1497                                 return ids;
1498                         }
1499                 }
1500         }
1501
1502         return false;
1503 }
1504
1505 function openArticleInNewWindow(id) {
1506         try {
1507                 debug("openArticleInNewWindow: " + id);
1508
1509                 var query = "backend.php?op=rpc&subop=getArticleLink&id=" + id;
1510                 var wname = "ttrss_article_" + id;
1511
1512                 debug(query + " " + wname);
1513
1514                 var w = window.open("", wname);
1515
1516                 if (!w) notify_error("Failed to open window for the article");
1517
1518                 new Ajax.Request(query, {
1519                         onComplete: function(transport) {
1520                                 open_article_callback(transport);
1521                         } });
1522
1523
1524         } catch (e) {
1525                 exception_error("openArticleInNewWindow", e);
1526         }
1527 }
1528
1529 /* http://textsnippets.com/posts/show/835 */
1530
1531 Position.GetWindowSize = function(w) {
1532         w = w ? w : window;
1533         var width = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
1534         var height = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
1535         return [width, height]
1536 }
1537
1538 /* http://textsnippets.com/posts/show/836 */
1539
1540 Position.Center = function(element, parent) {
1541         var w, h, pw, ph;
1542         var d = Element.getDimensions(element);
1543         w = d.width;
1544         h = d.height;
1545         Position.prepare();
1546         if (!parent) {
1547                 var ws = Position.GetWindowSize();
1548                 pw = ws[0];
1549                 ph = ws[1];
1550         } else {
1551                 pw = parent.offsetWidth;
1552                 ph = parent.offsetHeight;
1553         }
1554         element.style.top = (ph/2) - (h/2) -  Position.deltaY + "px";
1555         element.style.left = (pw/2) - (w/2) -  Position.deltaX + "px";
1556 }
1557
1558
1559 function labeltest_callback(transport) {
1560         try {
1561                 var container = document.getElementById('label_test_result');
1562
1563                 container.innerHTML = transport.responseText;
1564                 if (!Element.visible(container)) {
1565                         Effect.SlideDown(container, { duration : 0.5 });
1566                 }
1567
1568                 notify("");
1569         } catch (e) {
1570                 exception_error("labeltest_callback", e);
1571         }
1572 }
1573
1574 function labelTest() {
1575
1576         try {
1577                 var container = document.getElementById('label_test_result');
1578
1579                 var form = document.forms['label_edit_form'];
1580
1581                 var sql_exp = form.sql_exp.value;
1582                 var description = form.description.value;
1583
1584                 notify_progress("Loading, please wait...");
1585
1586                 var query = "backend.php?op=pref-labels&subop=test&expr=" +
1587                         param_escape(sql_exp) + "&descr=" + param_escape(description);
1588
1589                 new Ajax.Request(query, {
1590                         onComplete: function (transport) {
1591                                 labeltest_callback(transport);
1592                         } });
1593
1594                 return false;
1595
1596         } catch (e) {
1597                 exception_error("labelTest", e);
1598         }
1599 }
1600
1601 function isCdmMode() {
1602         return !document.getElementById("headlinesList");
1603 }
1604
1605 function getSelectedArticleIds2() {
1606         var rows = new Array();
1607         var cdm_mode = isCdmMode();
1608
1609         if (cdm_mode) {
1610                 rows = cdmGetSelectedArticles();
1611         } else {
1612                 rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1613         }
1614
1615         var ids = new Array();
1616
1617         for (var i = 0; i < rows.length; i++) {
1618                 var chk = document.getElementById("RCHK-" + rows[i]);
1619                 if (chk && chk.checked) {
1620                         ids.push(rows[i]);
1621                 }
1622         }
1623
1624         return ids;
1625 }
1626
1627 function displayHelpInfobox(topic_id) {
1628
1629         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
1630
1631         var w = window.open(url, "ttrss_help",
1632                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
1633
1634         return false;
1635 }
1636
1637 function focus_element(id) {
1638         try {
1639                 var e = document.getElementById(id);
1640                 if (e) e.focus();
1641         } catch (e) {
1642                 exception_error("focus_element", e);
1643         }
1644         return false;
1645 }
1646
1647 function loading_set_progress(p) {
1648         try {
1649                 if (p < last_progress_point || !Element.visible("overlay")) return;
1650
1651                 debug("<b>loading_set_progress : " + p + " (" + last_progress_point + ")</b>");
1652
1653                 var o = document.getElementById("l_progress_i");
1654
1655 //              o.style.width = (p * 2) + "px";
1656
1657                 new Effect.Scale(o, p, {
1658                         scaleY : false,
1659                         scaleFrom : last_progress_point,
1660                         scaleMode: { originalWidth : 200 },
1661                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
1662
1663                 last_progress_point = p;
1664
1665         } catch (e) {
1666                 exception_error("loading_set_progress", e);
1667         }
1668 }
1669
1670 function remove_splash() {
1671         if (Element.visible("overlay")) {
1672                 debug("about to remove splash, OMG!");
1673                 Element.hide("overlay");
1674                 debug("removed splash!");
1675         }
1676 }