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_msie() {
  15         return navigator.userAgent.match("MSIE");
  16 }
  17
  18 function is_opera() {
  19         return window.opera;
  20 }
  21
  22 function exception_error(location, e, silent) {
  23         var msg;
  24
  25         if (e.fileName) {
  26                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  27
  28                 msg = "Exception: " + e.name + ", " + e.message +
  29                         "\nFunction: " + location + "()" +
  30                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  31
  32         } else {
  33                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  34         }
  35
  36         debug("<b>EXCEPTION: " + msg + "</b>");
  37
  38         if (!silent) {
  39                 alert(msg);
  40         }
  41 }
  42
  43 function disableHotkeys() {
  44         hotkeys_enabled = false;
  45 }
  46
  47 function enableHotkeys() {
  48         hotkeys_enabled = true;
  49 }
  50
  51 function xmlhttp_ready(obj) {
  52         return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
  53 }
  54
  55 function open_article_callback(transport) {
  56         try {
  57
  58                 if (transport.responseXML) {
  59
  60                         var link = transport.responseXML.getElementsByTagName("link")[0];
  61                         var id = transport.responseXML.getElementsByTagName("id")[0];
  62
  63                         debug("open_article_callback, received link: " + link);
  64
  65                         if (link && id) {
  66
  67                                 var wname = "ttrss_article_" + id.firstChild.nodeValue;
  68
  69                                 debug("link url: " + link.firstChild.nodeValue + ", wname " + wname);
  70
  71                                 var w = window.open(link.firstChild.nodeValue, wname);
  72
  73                                 if (!w) { notify_error("Failed to load article in new window"); }
  74
  75                                 if (id) {
  76                                         id = id.firstChild.nodeValue;
  77                                         if (!document.getElementById("headlinesList")) {
  78                                                 window.setTimeout("toggleUnread(" + id + ", 0)", 100);
  79                                         }
  80                                 }
  81                         } else {
  82                                 notify_error("Can't open article: received invalid article link");
  83                         }
  84                 } else {
  85                         notify_error("Can't open article: received invalid XML");
  86                 }
  87
  88         } catch (e) {
  89                 exception_error("open_article_callback", e);
  90         }
  91 }
  92
  93 function param_escape(arg) {
  94         if (typeof encodeURIComponent != 'undefined')
  95                 return encodeURIComponent(arg);
  96         else
  97                 return escape(arg);
  98 }
  99
 100 function param_unescape(arg) {
 101         if (typeof decodeURIComponent != 'undefined')
 102                 return decodeURIComponent(arg);
 103         else
 104                 return unescape(arg);
 105 }
 106
 107 function delay(gap) {
 108         var then,now;
 109         then=new Date().getTime();
 110         now=then;
 111         while((now-then)<gap) {
 112                 now=new Date().getTime();
 113         }
 114 }
 115
 116 var notify_hide_timerid = false;
 117
 118 function hide_notify() {
 119         var n = document.getElementById("notify");
 120         if (n) {
 121                 n.style.display = "none";
 122         }
 123 }
 124
 125 function notify_silent_next() {
 126         notify_silent = true;
 127 }
 128
 129 function notify_real(msg, no_hide, n_type) {
 130
 131         if (notify_silent) {
 132                 notify_silent = false;
 133                 return;
 134         }
 135
 136         var n = document.getElementById("notify");
 137         var nb = document.getElementById("notify_body");
 138
 139         if (!n || !nb) return;
 140
 141         if (notify_hide_timerid) {
 142                 window.clearTimeout(notify_hide_timerid);
 143         }
 144
 145         if (msg == "") {
 146                 if (n.style.display == "block") {
 147                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 148                 }
 149                 return;
 150         } else {
 151                 n.style.display = "block";
 152         }
 153
 154         /* types:
 155
 156                 1 - generic
 157                 2 - progress
 158                 3 - error
 159                 4 - info
 160
 161         */
 162
 163         if (typeof __ != 'undefined') {
 164                 msg = __(msg);
 165         }
 166
 167         if (n_type == 1) {
 168                 n.className = "notify";
 169         } else if (n_type == 2) {
 170                 n.className = "notifyProgress";
 171                 msg = "<img src='images/indicator_white.gif'> " + msg;
 172         } else if (n_type == 3) {
 173                 n.className = "notifyError";
 174                 msg = "<img src='images/sign_excl.gif'> " + msg;
 175         } else if (n_type == 4) {
 176                 n.className = "notifyInfo";
 177                 msg = "<img src='images/sign_info.gif'> " + msg;
 178         }
 179
 180 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 181
 182         nb.innerHTML = msg;
 183
 184         if (!no_hide) {
 185                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 186         }
 187 }
 188
 189 function notify(msg, no_hide) {
 190         notify_real(msg, no_hide, 1);
 191 }
 192
 193 function notify_progress(msg, no_hide) {
 194         notify_real(msg, no_hide, 2);
 195 }
 196
 197 function notify_error(msg, no_hide) {
 198         notify_real(msg, no_hide, 3);
 199
 200 }
 201
 202 function notify_info(msg, no_hide) {
 203         notify_real(msg, no_hide, 4);
 204 }
 205
 206 function printLockingError() {
 207         notify_info("Please wait until operation finishes.");
 208 }
 209
 210 function cleanSelectedList(element) {
 211         var content = document.getElementById(element);
 212
 213         if (!document.getElementById("feedCatHolder")) {
 214                 for (i = 0; i < content.childNodes.length; i++) {
 215                         var child = content.childNodes[i];
 216                         try {
 217                                 child.className = child.className.replace("Selected", "");
 218                         } catch (e) {
 219                                 //
 220                         }
 221                 }
 222         } else {
 223                 for (i = 0; i < content.childNodes.length; i++) {
 224                         var child = content.childNodes[i];
 225                         if (child.id == "feedCatHolder") {
 226                                 debug(child.id);
 227                                 var fcat = child.lastChild;
 228                                 for (j = 0; j < fcat.childNodes.length; j++) {
 229                                         var feed = fcat.childNodes[j];
 230                                         feed.className = feed.className.replace("Selected", "");
 231                                 }
 232                         }
 233                 }
 234         }
 235 }
 236
 237
 238 function cleanSelected(element) {
 239         var content = document.getElementById(element);
 240
 241         for (i = 0; i < content.rows.length; i++) {
 242                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 243         }
 244 }
 245
 246 function getVisibleUnreadHeadlines() {
 247         var content = document.getElementById("headlinesList");
 248
 249         var rows = new Array();
 250
 251         if (!content) return rows;
 252
 253         for (i = 0; i < content.rows.length; i++) {
 254                 var row_id = content.rows[i].id.replace("RROW-", "");
 255                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 256                                 rows.push(row_id);
 257                 }
 258         }
 259         return rows;
 260 }
 261
 262 function getVisibleHeadlineIds() {
 263
 264         var content = document.getElementById("headlinesList");
 265
 266         var rows = new Array();
 267
 268         if (!content) return rows;
 269
 270         for (i = 0; i < content.rows.length; i++) {
 271                 var row_id = content.rows[i].id.replace("RROW-", "");
 272                 if (row_id.length > 0) {
 273                                 rows.push(row_id);
 274                 }
 275         }
 276         return rows;
 277 }
 278
 279 function getFirstVisibleHeadlineId() {
 280         if (isCdmMode()) {
 281                 var rows = cdmGetVisibleArticles();
 282                 return rows[0];
 283         } else {
 284                 var rows = getVisibleHeadlineIds();
 285                 return rows[0];
 286         }
 287 }
 288
 289 function getLastVisibleHeadlineId() {
 290         if (isCdmMode()) {
 291                 var rows = cdmGetVisibleArticles();
 292                 return rows[rows.length-1];
 293         } else {
 294                 var rows = getVisibleHeadlineIds();
 295                 return rows[rows.length-1];
 296         }
 297 }
 298
 299 function markHeadline(id) {
 300         var row = document.getElementById("RROW-" + id);
 301         if (row) {
 302                 var is_active = false;
 303
 304                 if (row.className.match("Active")) {
 305                         is_active = true;
 306                 }
 307                 row.className = row.className.replace("Selected", "");
 308                 row.className = row.className.replace("Active", "");
 309                 row.className = row.className.replace("Insensitive", "");
 310
 311                 if (is_active) {
 312                         row.className = row.className = "Active";
 313                 }
 314
 315                 var check = document.getElementById("RCHK-" + id);
 316
 317                 if (check) {
 318                         check.checked = true;
 319                 }
 320
 321                 row.className = row.className + "Selected";
 322
 323         }
 324 }
 325
 326 function getFeedIds() {
 327         var content = document.getElementById("feedsList");
 328
 329         var rows = new Array();
 330
 331         for (i = 0; i < content.rows.length; i++) {
 332                 var id = content.rows[i].id.replace("FEEDR-", "");
 333                 if (id.length > 0) {
 334                         rows.push(id);
 335                 }
 336         }
 337
 338         return rows;
 339 }
 340
 341 function setCookie(name, value, lifetime, path, domain, secure) {
 342
 343         var d = false;
 344
 345         if (lifetime) {
 346                 d = new Date();
 347                 d.setTime(d.getTime() + (lifetime * 1000));
 348         }
 349
 350         debug("setCookie: " + name + " => " + value + ": " + d);
 351
 352         int_setCookie(name, value, d, path, domain, secure);
 353
 354 }
 355
 356 function int_setCookie(name, value, expires, path, domain, secure) {
 357         document.cookie= name + "=" + escape(value) +
 358                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 359                 ((path) ? "; path=" + path : "") +
 360                 ((domain) ? "; domain=" + domain : "") +
 361                 ((secure) ? "; secure" : "");
 362 }
 363
 364 function delCookie(name, path, domain) {
 365         if (getCookie(name)) {
 366                 document.cookie = name + "=" +
 367                 ((path) ? ";path=" + path : "") +
 368                 ((domain) ? ";domain=" + domain : "" ) +
 369                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 370         }
 371 }
 372
 373
 374 function getCookie(name) {
 375
 376         var dc = document.cookie;
 377         var prefix = name + "=";
 378         var begin = dc.indexOf("; " + prefix);
 379         if (begin == -1) {
 380             begin = dc.indexOf(prefix);
 381             if (begin != 0) return null;
 382         }
 383         else {
 384             begin += 2;
 385         }
 386         var end = document.cookie.indexOf(";", begin);
 387         if (end == -1) {
 388             end = dc.length;
 389         }
 390         return unescape(dc.substring(begin + prefix.length, end));
 391 }
 392
 393 function disableContainerChildren(id, disable, doc) {
 394
 395         if (!doc) doc = document;
 396
 397         var container = doc.getElementById(id);
 398
 399         if (!container) {
 400                 //alert("disableContainerChildren: element " + id + " not found");
 401                 return;
 402         }
 403
 404         for (var i = 0; i < container.childNodes.length; i++) {
 405                 var child = container.childNodes[i];
 406
 407                 try {
 408                         child.disabled = disable;
 409                 } catch (E) {
 410
 411                 }
 412
 413                 if (disable) {
 414                         if (child.className && child.className.match("button")) {
 415                                 child.className = "disabledButton";
 416                         }
 417                 } else {
 418                         if (child.className && child.className.match("disabledButton")) {
 419                                 child.className = "button";
 420                         }
 421                 }
 422         }
 423
 424 }
 425
 426 function gotoPreferences() {
 427         document.location.href = "prefs.php";
 428 }
 429
 430 function gotoMain() {
 431         document.location.href = "tt-rss.php";
 432 }
 433
 434 function gotoExportOpml() {
 435         document.location.href = "opml.php?op=Export";
 436 }
 437
 438 function getActiveFeedId() {
 439 //      return getCookie("ttrss_vf_actfeed");
 440         try {
 441                 debug("gAFID: " + active_feed_id);
 442                 return active_feed_id;
 443         } catch (e) {
 444                 exception_error("getActiveFeedId", e);
 445         }
 446 }
 447
 448 function activeFeedIsCat() {
 449         return active_feed_is_cat;
 450 }
 451
 452 function setActiveFeedId(id) {
 453 //      return setCookie("ttrss_vf_actfeed", id);
 454         try {
 455                 debug("sAFID(" + id + ")");
 456                 active_feed_id = id;
 457         } catch (e) {
 458                 exception_error("setActiveFeedId", e);
 459         }
 460 }
 461
 462 function parse_counters(reply, scheduled_call) {
 463         try {
 464
 465                 var feeds_found = 0;
 466
 467                 var elems = reply.getElementsByTagName("counter");
 468
 469                 for (var l = 0; l < elems.length; l++) {
 470
 471                         var id = elems[l].getAttribute("id");
 472                         var t = elems[l].getAttribute("type");
 473                         var ctr = elems[l].getAttribute("counter");
 474                         var error = elems[l].getAttribute("error");
 475                         var has_img = elems[l].getAttribute("hi");
 476                         var updated = elems[l].getAttribute("updated");
 477                         var title = elems[l].getAttribute("title");
 478
 479                         if (id == "global-unread") {
 480                                 global_unread = ctr;
 481                                 updateTitle();
 482                                 continue;
 483                         }
 484
 485                         if (id == "subscribed-feeds") {
 486                                 feeds_found = ctr;
 487                                 continue;
 488                         }
 489
 490                         if (t == "category") {
 491                                 var catctr = document.getElementById("FCATCTR-" + id);
 492                                 if (catctr) {
 493                                         catctr.innerHTML = "(" + ctr + ")";
 494                                         if (ctr > 0) {
 495                                                 catctr.className = "catCtrHasUnread";
 496                                         } else {
 497                                                 catctr.className = "catCtrNoUnread";
 498                                         }
 499                                 }
 500                                 continue;
 501                         }
 502
 503                         var feedctr = document.getElementById("FEEDCTR-" + id);
 504                         var feedu = document.getElementById("FEEDU-" + id);
 505                         var feedr = document.getElementById("FEEDR-" + id);
 506                         var feed_img = document.getElementById("FIMG-" + id);
 507                         var feedlink = document.getElementById("FEEDL-" + id);
 508                         var feedupd = document.getElementById("FLUPD-" + id);
 509
 510                         if (updated && feedlink) {
 511                                 if (error) {
 512                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 513                                 } else {
 514                                         feedlink.title = "Updated: " + updated;
 515                                 }
 516                         }
 517
 518                         if (updated && feedupd) {
 519                                 if (error) {
 520                                         feedupd.innerHTML = updated + " (Error)";
 521                                 } else {
 522                                         feedupd.innerHTML = updated;
 523                                 }
 524                         }
 525
 526                         if (has_img && feed_img && !is_msie()) {
 527                                 if (!feed_img.src.match(id + ".ico")) {
 528                                         feed_img.src = getInitParam("icons_location") + "/" + id + ".ico";
 529                                 }
 530                         }
 531
 532                         if (feedlink && title) {
 533                                 feedlink.innerHTML = title;
 534                         }
 535
 536                         if (feedctr && feedu && feedr) {
 537
 538                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 539                                         viewCurrentFeed();
 540                                 }
 541
 542                                 var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 543
 544                                 feedu.innerHTML = ctr;
 545
 546                                 if (error) {
 547                                         feedr.className = feedr.className.replace("feed", "error");
 548                                 } else if (id > 0) {
 549                                         feedr.className = feedr.className.replace("error", "feed");
 550                                 }
 551
 552                                 if (ctr > 0) {
 553                                         feedctr.className = "odd";
 554                                         if (!feedr.className.match("Unread")) {
 555                                                 var is_selected = feedr.className.match("Selected");
 556
 557                                                 feedr.className = feedr.className.replace("Selected", "");
 558                                                 feedr.className = feedr.className.replace("Unread", "");
 559
 560                                                 feedr.className = feedr.className + "Unread";
 561
 562                                                 if (is_selected) {
 563                                                         feedr.className = feedr.className + "Selected";
 564                                                 }
 565
 566                                         }
 567
 568                                         if (row_needs_hl) {
 569                                                 new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 570                                                         queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 571                                         }
 572                                 } else {
 573                                         feedctr.className = "invisible";
 574                                         feedr.className = feedr.className.replace("Unread", "");
 575                                 }
 576                         }
 577                 }
 578
 579                 hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 580
 581                 var feeds_stored = number_of_feeds;
 582
 583                 debug("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 584
 585                 if (feeds_stored != feeds_found) {
 586                         number_of_feeds = feeds_found;
 587
 588                         if (feeds_stored != 0 && feeds_found != 0) {
 589                                 debug("Subscribed feed number changed, refreshing feedlist");
 590                                 setTimeout('updateFeedList(false, false)', 50);
 591                         }
 592                 }
 593
 594         } catch (e) {
 595                 exception_error("parse_counters", e);
 596         }
 597 }
 598
 599 function parse_counters_reply(transport, scheduled_call) {
 600
 601         if (!transport.responseXML) {
 602                 notify_error("Backend did not return valid XML", true);
 603                 return;
 604         }
 605
 606         var reply = transport.responseXML.firstChild;
 607
 608         if (!reply) {
 609                 notify_error("Backend did not return expected XML object", true);
 610                 updateTitle("");
 611                 return;
 612         }
 613
 614         var error_code = false;
 615         var error_msg = false;
 616
 617         if (reply.firstChild) {
 618                 error_code = reply.firstChild.getAttribute("error-code");
 619                 error_msg = reply.firstChild.getAttribute("error-msg");
 620         }
 621
 622         if (!error_code) {
 623                 error_code = reply.getAttribute("error-code");
 624                 error_msg = reply.getAttribute("error-msg");
 625         }
 626
 627         if (error_code && error_code != 0) {
 628                 debug("refetch_callback: got error code " + error_code);
 629                 return fatalError(error_code, error_msg);
 630         }
 631
 632         var counters = reply.getElementsByTagName("counters")[0];
 633
 634         parse_counters(counters, scheduled_call);
 635
 636         var runtime_info = reply.getElementsByTagName("runtime-info")[0];
 637
 638         parse_runtime_info(runtime_info);
 639
 640         if (getInitParam("feeds_sort_by_unread") == 1) {
 641                         resort_feedlist();
 642         }
 643
 644         hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 645
 646 }
 647
 648 function all_counters_callback2(transport) {
 649         try {
 650                 debug("<b>all_counters_callback2 IN: " + transport + "</b>");
 651                 parse_counters_reply(transport);
 652                 debug("<b>all_counters_callback2 OUT: " + transport + "</b>");
 653
 654         } catch (e) {
 655                 exception_error("all_counters_callback2", e);
 656         }
 657 }
 658
 659 function get_feed_unread(id) {
 660         try {
 661                 return parseInt(document.getElementById("FEEDU-" + id).innerHTML);
 662         } catch (e) {
 663                 exception_error("get_feed_unread", e, true);
 664                 return -1;
 665         }
 666 }
 667
 668 function get_feed_entry_unread(doc, elem) {
 669
 670         var id = elem.id.replace("FEEDR-", "");
 671
 672         if (id <= 0) {
 673                 return -1;
 674         }
 675
 676         try {
 677                 return parseInt(doc.getElementById("FEEDU-" + id).innerHTML);
 678         } catch (e) {
 679                 return -1;
 680         }
 681 }
 682
 683 function resort_category(doc, node) {
 684         debug("resort_category: " + node);
 685
 686         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 687                 for (i = 0; i < node.childNodes.length; i++) {
 688                         if (node.childNodes[i].nodeName != "LI") { continue; }
 689
 690                         if (get_feed_entry_unread(doc, node.childNodes[i]) < 0) {
 691                                 continue;
 692                         }
 693
 694                         for (j = i+1; j < node.childNodes.length; j++) {
 695                                 if (node.childNodes[j].nodeName != "LI") { continue; }
 696
 697                                 var tmp_val = get_feed_entry_unread(doc, node.childNodes[i]);
 698                                 var cur_val = get_feed_entry_unread(doc, node.childNodes[j]);
 699
 700                                 if (cur_val > tmp_val) {
 701                                         tempnode_i = node.childNodes[i].cloneNode(true);
 702                                         tempnode_j = node.childNodes[j].cloneNode(true);
 703                                         node.replaceChild(tempnode_i, node.childNodes[j]);
 704                                         node.replaceChild(tempnode_j, node.childNodes[i]);
 705                                 }
 706                         }
 707
 708                 }
 709         }
 710
 711 }
 712
 713 function resort_feedlist() {
 714         debug("resort_feedlist");
 715
 716         var fd = document;
 717
 718         if (fd.getElementById("feedCatHolder")) {
 719
 720                 var feeds = fd.getElementById("feedList");
 721                 var child = feeds.firstChild;
 722
 723                 while (child) {
 724
 725                         if (child.id == "feedCatHolder") {
 726                                 resort_category(fd, child.firstChild);
 727                         }
 728
 729                         child = child.nextSibling;
 730                 }
 731
 732         } else {
 733                 resort_category(fd, fd.getElementById("feedList"));
 734         }
 735 }
 736
 737 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 738   * * @author Sundar Dorai-Raj
 739   * * Email: sdoraira@vt.edu
 740   * * This program is free software; you can redistribute it and/or
 741   * * modify it under the terms of the GNU General Public License
 742   * * as published by the Free Software Foundation; either version 2
 743   * * of the License, or (at your option) any later version,
 744   * * provided that any use properly credits the author.
 745   * * This program is distributed in the hope that it will be useful,
 746   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 747   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 748   * * GNU General Public License for more details at http://www.gnu.org * * */
 749
 750   var numbers=".0123456789";
 751   function isNumeric(x) {
 752     // is x a String or a character?
 753     if(x.length>1) {
 754       // remove negative sign
 755       x=Math.abs(x)+"";
 756       for(j=0;j<x.length;j++) {
 757         // call isNumeric recursively for each character
 758         number=isNumeric(x.substring(j,j+1));
 759         if(!number) return number;
 760       }
 761       return number;
 762     }
 763     else {
 764       // if x is number return true
 765       if(numbers.indexOf(x)>=0) return true;
 766       return false;
 767     }
 768   }
 769
 770
 771 function hideOrShowFeeds(doc, hide) {
 772
 773         debug("hideOrShowFeeds: " + doc + ", " + hide);
 774
 775         var fd = document;
 776
 777         var list = fd.getElementById("feedList");
 778
 779         if (fd.getElementById("feedCatHolder")) {
 780
 781                 var feeds = fd.getElementById("feedList");
 782                 var child = feeds.firstChild;
 783
 784                 while (child) {
 785
 786                         if (child.id == "feedCatHolder") {
 787                                 hideOrShowFeedsCategory(fd, child.firstChild, hide, child.previousSibling);
 788                         }
 789
 790                         child = child.nextSibling;
 791                 }
 792
 793         } else {
 794                 hideOrShowFeedsCategory(fd, fd.getElementById("feedList"), hide);
 795         }
 796 }
 797
 798 function hideOrShowFeedsCategory(doc, node, hide, cat_node) {
 799
 800 //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 801
 802         var cat_unread = 0;
 803
 804         if (!node) {
 805                 debug("hideOrShowFeeds: passed node is null, aborting");
 806                 return;
 807         }
 808
 809 //      debug("cat: " + node.id);
 810
 811         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 812                 for (i = 0; i < node.childNodes.length; i++) {
 813                         if (node.childNodes[i].nodeName != "LI") { continue; }
 814
 815                         if (node.childNodes[i].style != undefined) {
 816
 817                                 var has_unread = (node.childNodes[i].className != "feed" &&
 818                                         node.childNodes[i].className != "label" &&
 819                                         !(!getInitParam("hide_read_shows_special") &&
 820                                                 node.childNodes[i].className == "virt") &&
 821                                         node.childNodes[i].className != "error" &&
 822                                         node.childNodes[i].className != "tag");
 823
 824 //                              debug(node.childNodes[i].id + " --> " + has_unread);
 825
 826                                 if (hide && !has_unread) {
 827                                         //node.childNodes[i].style.display = "none";
 828                                         var id = node.childNodes[i].id;
 829                                         Effect.Fade(node.childNodes[i], {duration : 0.3,
 830                                                 queue: { position: 'end', scope: 'FFADE-' + id, limit: 1 }});
 831                                 }
 832
 833                                 if (!hide) {
 834                                         node.childNodes[i].style.display = "list-item";
 835                                         //Effect.Appear(node.childNodes[i], {duration : 0.3});
 836                                 }
 837
 838                                 if (has_unread) {
 839                                         node.childNodes[i].style.display = "list-item";
 840                                         cat_unread++;
 841                                         //Effect.Appear(node.childNodes[i], {duration : 0.3});
 842                                         //Effect.Highlight(node.childNodes[i]);
 843                                 }
 844                         }
 845                 }
 846         }
 847
 848 //      debug("end cat: " + node.id + " unread " + cat_unread);
 849
 850         if (cat_unread == 0) {
 851                 if (cat_node.style == undefined) {
 852                         debug("ERROR: supplied cat_node " + cat_node +
 853                                 " has no styles. WTF?");
 854                         return;
 855                 }
 856                 if (hide) {
 857                         //cat_node.style.display = "none";
 858                         Effect.Fade(cat_node, {duration : 0.3,
 859                                 queue: { position: 'end', scope: 'CFADE-' + node.id, limit: 1 }});
 860                 } else {
 861                         cat_node.style.display = "list-item";
 862                 }
 863         } else {
 864                 try {
 865                         cat_node.style.display = "list-item";
 866                 } catch (e) {
 867                         debug(e);
 868                 }
 869         }
 870
 871 //      debug("unread for category: " + cat_unread);
 872 }
 873
 874 function selectTableRow(r, do_select) {
 875         r.className = r.className.replace("Selected", "");
 876
 877         if (do_select) {
 878                 r.className = r.className + "Selected";
 879         }
 880 }
 881
 882 function selectTableRowById(elem_id, check_id, do_select) {
 883
 884         try {
 885
 886                 var row = document.getElementById(elem_id);
 887
 888                 if (row) {
 889                         selectTableRow(row, do_select);
 890                 }
 891
 892                 var check = document.getElementById(check_id);
 893
 894                 if (check) {
 895                         check.checked = do_select;
 896                 }
 897         } catch (e) {
 898                 exception_error("selectTableRowById", e);
 899         }
 900 }
 901
 902 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 903         classcheck, reset_others) {
 904
 905         var content = document.getElementById(content_id);
 906
 907         if (!content) {
 908                 alert("[selectTableRows] Element " + content_id + " not found.");
 909                 return;
 910         }
 911
 912         for (i = 0; i < content.rows.length; i++) {
 913                 if (Element.visible(content.rows[i])) {
 914                         if (!classcheck || content.rows[i].className.match(classcheck)) {
 915
 916                                 if (content.rows[i].id.match(prefix)) {
 917                                         selectTableRow(content.rows[i], do_select);
 918
 919                                         var row_id = content.rows[i].id.replace(prefix, "");
 920                                         var check = document.getElementById(check_prefix + row_id);
 921
 922                                         if (check) {
 923                                                 check.checked = do_select;
 924                                         }
 925                                 } else if (reset_others) {
 926                                         selectTableRow(content.rows[i], false);
 927
 928                                         var row_id = content.rows[i].id.replace(prefix, "");
 929                                         var check = document.getElementById(check_prefix + row_id);
 930
 931                                         if (check) {
 932                                                 check.checked = false;
 933                                         }
 934
 935                                 }
 936                         } else if (reset_others) {
 937                                 selectTableRow(content.rows[i], false);
 938
 939                                 var row_id = content.rows[i].id.replace(prefix, "");
 940                                 var check = document.getElementById(check_prefix + row_id);
 941
 942                                 if (check) {
 943                                         check.checked = false;
 944                                 }
 945
 946                         }
 947                 }
 948         }
 949 }
 950
 951 function getSelectedTableRowIds(content_id, prefix) {
 952
 953         var content = document.getElementById(content_id);
 954
 955         if (!content) {
 956                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 957                 return;
 958         }
 959
 960         var sel_rows = new Array();
 961
 962         for (i = 0; i < content.rows.length; i++) {
 963                 if (content.rows[i].id.match(prefix) &&
 964                                 content.rows[i].className.match("Selected")) {
 965
 966                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 967                         sel_rows.push(row_id);
 968                 }
 969         }
 970
 971         return sel_rows;
 972
 973 }
 974
 975 function toggleSelectRowById(sender, id) {
 976         var row = document.getElementById(id);
 977
 978         if (sender.checked) {
 979                 if (!row.className.match("Selected")) {
 980                         row.className = row.className + "Selected";
 981                 }
 982         } else {
 983                 if (row.className.match("Selected")) {
 984                         row.className = row.className.replace("Selected", "");
 985                 }
 986         }
 987 }
 988
 989 function toggleSelectListRow(sender) {
 990         var parent_row = sender.parentNode;
 991
 992         if (sender.checked) {
 993                 if (!parent_row.className.match("Selected")) {
 994                         parent_row.className = parent_row.className + "Selected";
 995                 }
 996         } else {
 997                 if (parent_row.className.match("Selected")) {
 998                         parent_row.className = parent_row.className.replace("Selected", "");
 999                 }
1000         }
1001 }
1002
1003 function tSR(sender) {
1004         return toggleSelectRow(sender);
1005 }
1006
1007 function toggleSelectRow(sender) {
1008         var parent_row = sender.parentNode.parentNode;
1009
1010         if (sender.checked) {
1011                 if (!parent_row.className.match("Selected")) {
1012                         parent_row.className = parent_row.className + "Selected";
1013                 }
1014         } else {
1015                 if (parent_row.className.match("Selected")) {
1016                         parent_row.className = parent_row.className.replace("Selected", "");
1017                 }
1018         }
1019 }
1020
1021 function getRelativeFeedId(list, id, direction, unread_only) {
1022         var rows = list.getElementsByTagName("LI");
1023         var feeds = new Array();
1024
1025         for (var i = 0; i < rows.length; i++) {
1026                 if (rows[i].id.match("FEEDR-")) {
1027
1028                         if (rows[i].id == "FEEDR-" + id || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1029
1030                                 if (!unread_only ||
1031                                                 (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1032                                         feeds.push(rows[i].id.replace("FEEDR-", ""));
1033                                 }
1034                         }
1035                 }
1036         }
1037
1038         if (!id) {
1039                 if (direction == "next") {
1040                         return feeds.shift();
1041                 } else {
1042                         return feeds.pop();
1043                 }
1044         } else {
1045                 if (direction == "next") {
1046                         var idx = feeds.indexOf(id);
1047                         if (idx != -1 && idx < feeds.length) {
1048                                 return feeds[idx+1];
1049                         } else {
1050                                 return getRelativeFeedId(list, false, direction, unread_only);
1051                         }
1052                 } else {
1053                         var idx = feeds.indexOf(id);
1054                         if (idx > 0) {
1055                                 return feeds[idx-1];
1056                         } else {
1057                                 return getRelativeFeedId(list, false, direction, unread_only);
1058                         }
1059                 }
1060
1061         }
1062 }
1063
1064 function showBlockElement(id, h_id) {
1065         var elem = document.getElementById(id);
1066
1067         if (elem) {
1068                 elem.style.display = "block";
1069
1070                 if (h_id) {
1071                         elem = document.getElementById(h_id);
1072                         if (elem) {
1073                                 elem.style.display = "none";
1074                         }
1075                 }
1076         } else {
1077                 alert("[showBlockElement] can't find element with id " + id);
1078         }
1079 }
1080
1081 function appearBlockElement_afh(effect) {
1082
1083 }
1084
1085 function checkboxToggleElement(elem, id) {
1086         if (elem.checked) {
1087                 Effect.SlideDown(id, {duration : 0.5});
1088         } else {
1089                 Effect.SlideUp(id, {duration : 0.5});
1090         }
1091 }
1092
1093 function appearBlockElement(id, h_id) {
1094
1095         try {
1096                 if (h_id) {
1097                         Effect.Fade(h_id);
1098                 }
1099                 Effect.SlideDown(id, {duration : 1.0, afterFinish: appearBlockElement_afh});
1100         } catch (e) {
1101                 exception_error("appearBlockElement", e);
1102         }
1103
1104 }
1105
1106 function hideParentElement(e) {
1107         e.parentNode.style.display = "none";
1108 }
1109
1110 function dropboxSelect(e, v) {
1111         for (i = 0; i < e.length; i++) {
1112                 if (e[i].value == v) {
1113                         e.selectedIndex = i;
1114                         break;
1115                 }
1116         }
1117 }
1118
1119 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1120 // bugfixed just a little bit :-)
1121 function getURLParam(strParamName){
1122   var strReturn = "";
1123   var strHref = window.location.href;
1124
1125   if (strHref.indexOf("#") == strHref.length-1) {
1126                 strHref = strHref.substring(0, strHref.length-1);
1127   }
1128
1129   if ( strHref.indexOf("?") > -1 ){
1130     var strQueryString = strHref.substr(strHref.indexOf("?"));
1131     var aQueryString = strQueryString.split("&");
1132     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1133       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1134         var aParam = aQueryString[iParam].split("=");
1135         strReturn = aParam[1];
1136         break;
1137       }
1138     }
1139   }
1140   return strReturn;
1141 }
1142
1143 function leading_zero(p) {
1144         var s = String(p);
1145         if (s.length == 1) s = "0" + s;
1146         return s;
1147 }
1148
1149 function closeInfoBox(cleanup) {
1150
1151         if (!is_msie() && !getInitParam("infobox_disable_overlay")) {
1152                 var overlay = document.getElementById("dialog_overlay");
1153                 if (overlay) {
1154                         overlay.style.display = "none";
1155                 }
1156         }
1157
1158         var box = document.getElementById('infoBox');
1159         var shadow = document.getElementById('infoBoxShadow');
1160
1161         if (shadow) {
1162                 shadow.style.display = "none";
1163         } else if (box) {
1164                 box.style.display = "none";
1165         }
1166
1167         if (cleanup) box.innerHTML = "&nbsp;";
1168
1169         enableHotkeys();
1170
1171         return false;
1172 }
1173
1174
1175 function displayDlg(id, param) {
1176
1177         notify_progress("Loading, please wait...", true);
1178
1179         disableHotkeys();
1180
1181         var query = "backend.php?op=dlg&id=" +
1182                 param_escape(id) + "&param=" + param_escape(param);
1183
1184         new Ajax.Request(query, {
1185                 onComplete: function (transport) {
1186                         infobox_callback2(transport);
1187                 } });
1188
1189         return false;
1190 }
1191
1192 function infobox_submit_callback2(transport) {
1193         closeInfoBox();
1194
1195         try {
1196                 // called from prefs, reload tab
1197                 if (typeof active_tab != 'undefined' && active_tab) {
1198                         selectTab(active_tab, false);
1199                 }
1200         } catch (e) { }
1201
1202         if (transport.responseText) {
1203                 notify_info(transport.responseText);
1204         }
1205 }
1206
1207 function infobox_callback2(transport) {
1208         try {
1209
1210                 debug("infobox_callback2");
1211
1212                 if (!is_msie() && !getInitParam("infobox_disable_overlay")) {
1213                         var overlay = document.getElementById("dialog_overlay");
1214                         if (overlay) {
1215                                 overlay.style.display = "block";
1216                         }
1217                 }
1218
1219                 var box = document.getElementById('infoBox');
1220                 var shadow = document.getElementById('infoBoxShadow');
1221                 if (box) {
1222
1223                         box.innerHTML=transport.responseText;
1224                         if (shadow) {
1225                                 shadow.style.display = "block";
1226                         } else {
1227                                 box.style.display = "block";
1228                         }
1229                 }
1230
1231                 /* FIXME this needs to be moved out somewhere */
1232
1233                 if (document.getElementById("tags_choices")) {
1234                         new Ajax.Autocompleter('tags_str', 'tags_choices',
1235                                 "backend.php?op=rpc&subop=completeTags",
1236                                 { tokens: ',', paramName: "search" });
1237                 }
1238
1239                 disableHotkeys();
1240
1241                 notify("");
1242         } catch (e) {
1243                 exception_error("infobox_callback2", e);
1244         }
1245 }
1246
1247 function createFilter() {
1248
1249         try {
1250
1251                 var form = document.forms['filter_add_form'];
1252                 var reg_exp = form.reg_exp.value;
1253
1254                 if (reg_exp == "") {
1255                         alert(__("Can't add filter: nothing to match on."));
1256                         return false;
1257                 }
1258
1259                 var query = Form.serialize("filter_add_form");
1260
1261                 // we can be called from some other tab in Prefs
1262                 if (typeof active_tab != 'undefined' && active_tab) {
1263                         active_tab = "filterConfig";
1264                 }
1265
1266                 new Ajax.Request("backend.php?" + query, {
1267                         onComplete: function (transport) {
1268                                 infobox_submit_callback2(transport);
1269                         } });
1270
1271                 return true;
1272
1273         } catch (e) {
1274                 exception_error("createFilter", e);
1275         }
1276 }
1277
1278 function toggleSubmitNotEmpty(e, submit_id) {
1279         try {
1280                 document.getElementById(submit_id).disabled = (e.value == "")
1281         } catch (e) {
1282                 exception_error("toggleSubmitNotEmpty", e);
1283         }
1284 }
1285
1286 function isValidURL(s) {
1287         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1288 }
1289
1290 function subscribeToFeed() {
1291
1292         var form = document.forms['feed_add_form'];
1293         var feed_url = form.feed_url.value;
1294
1295         if (feed_url == "") {
1296                 alert(__("Can't subscribe: no feed URL given."));
1297                 return false;
1298         }
1299
1300         notify_progress(__("Subscribing to feed..."), true);
1301
1302         closeInfoBox();
1303
1304         var feeds_doc = document;
1305
1306 //      feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1307
1308         var query = Form.serialize("feed_add_form");
1309
1310         debug("subscribe q: " + query);
1311
1312         new Ajax.Request("backend.php", {
1313                 parameters: query,
1314                 onComplete: function(transport) {
1315                         dlg_frefresh_callback(transport);
1316                 } });
1317
1318         return false;
1319 }
1320
1321 function filterCR(e, f)
1322 {
1323      var key;
1324
1325      if(window.event)
1326           key = window.event.keyCode;     //IE
1327      else
1328           key = e.which;     //firefox
1329
1330         if (key == 13) {
1331                 if (typeof f != 'undefined') {
1332                         f();
1333                         return false;
1334                 } else {
1335                         return false;
1336                 }
1337         } else {
1338                 return true;
1339         }
1340 }
1341
1342 function getMainContext() {
1343         return this.window;
1344 }
1345
1346 function getFeedsContext() {
1347         return this.window;
1348 }
1349
1350 function getContentContext() {
1351         return this.window;
1352 }
1353
1354 function getHeadlinesContext() {
1355         return this.window;
1356 }
1357
1358 var debug_last_class = "even";
1359
1360 function debug(msg) {
1361
1362         if (debug_last_class == "even") {
1363                 debug_last_class = "odd";
1364         } else {
1365                 debug_last_class = "even";
1366         }
1367
1368         var c = document.getElementById('debug_output');
1369         if (c && Element.visible(c)) {
1370                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1371                         c.removeChild(c.lastChild);
1372                 }
1373
1374                 var d = new Date();
1375                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1376                         ":" + leading_zero(d.getSeconds());
1377                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1378                         msg + "</li>" + c.innerHTML;
1379         }
1380 }
1381
1382 function getInitParam(key) {
1383         return init_params[key];
1384 }
1385
1386 function storeInitParam(key, value) {
1387         debug("<b>storeInitParam is OBSOLETE: " + key + " => " + value + "</b>");
1388         init_params[key] = value;
1389 }
1390
1391 function fatalError(code, message) {
1392         try {
1393
1394                 if (code == 6) {
1395                         window.location.href = "tt-rss.php";
1396                 } else if (code == 5) {
1397                         window.location.href = "update.php";
1398                 } else {
1399                         var fe = document.getElementById("fatal_error");
1400                         var fc = document.getElementById("fatal_error_msg");
1401
1402                         if (message == "") message = "Unknown error";
1403
1404                         fc.innerHTML = "<img src='images/sign_excl.gif'> " + message + " (Code " + code + ")";
1405
1406                         fe.style.display = "block";
1407                 }
1408
1409         } catch (e) {
1410                 exception_error("fatalError", e);
1411         }
1412 }
1413
1414 function getFeedName(id, is_cat) {
1415         var d = getFeedsContext().document;
1416
1417         var e;
1418
1419         if (is_cat) {
1420                 e = d.getElementById("FCATN-" + id);
1421         } else {
1422                 e = d.getElementById("FEEDN-" + id);
1423         }
1424         if (e) {
1425                 return e.innerHTML.stripTags();
1426         } else {
1427                 return null;
1428         }
1429 }
1430
1431 function viewContentUrl(url) {
1432         getContentContext().location = url;
1433 }
1434
1435 function filterDlgCheckAction(sender) {
1436
1437         try {
1438
1439                 var action = sender[sender.selectedIndex].value;
1440
1441                 var form = document.forms["filter_add_form"];
1442
1443                 if (!form) {
1444                         form = document.forms["filter_edit_form"];
1445                 }
1446
1447                 if (!form) {
1448                         debug("filterDlgCheckAction: can't find form!");
1449                         return;
1450                 }
1451
1452                 var action_param = form.action_param;
1453
1454                 if (!action_param) {
1455                         debug("filterDlgCheckAction: can't find action param!");
1456                         return;
1457                 }
1458
1459                 // if selected action supports parameters, enable params field
1460                 if (action == 4 || action == 6) {
1461                         action_param.disabled = false;
1462                 } else {
1463                         action_param.disabled = true;
1464                 }
1465
1466         } catch (e) {
1467                 exception_error("filterDlgCheckAction", e);
1468         }
1469
1470 }
1471
1472 function explainError(code) {
1473         return displayDlg("explainError", code);
1474 }
1475
1476 // this only searches loaded headlines list, not in CDM
1477 function getRelativePostIds(id, limit) {
1478
1479         if (!limit) limit = 3;
1480
1481         debug("getRelativePostIds: " + id + " limit=" + limit);
1482
1483         var ids = new Array();
1484         var container = document.getElementById("headlinesList");
1485
1486         if (container) {
1487                 var rows = container.rows;
1488
1489                 for (var i = 0; i < rows.length; i++) {
1490                         var r_id = rows[i].id.replace("RROW-", "");
1491
1492                         if (r_id == id) {
1493                                 for (var k = 1; k <= limit; k++) {
1494                                         var nid = false;
1495
1496                                         if (i > k-1) var nid = rows[i-k].id.replace("RROW-", "");
1497                                         if (nid) ids.push(nid);
1498
1499                                         if (i < rows.length-k) nid = rows[i+k].id.replace("RROW-", "");
1500                                         if (nid) ids.push(nid);
1501                                 }
1502
1503                                 return ids;
1504                         }
1505                 }
1506         }
1507
1508         return false;
1509 }
1510
1511 function openArticleInNewWindow(id) {
1512         try {
1513                 debug("openArticleInNewWindow: " + id);
1514
1515                 var query = "backend.php?op=rpc&subop=getArticleLink&id=" + id;
1516                 var wname = "ttrss_article_" + id;
1517
1518                 debug(query + " " + wname);
1519
1520                 var w = window.open("", wname);
1521
1522                 if (!w) notify_error("Failed to open window for the article");
1523
1524                 new Ajax.Request(query, {
1525                         onComplete: function(transport) {
1526                                 open_article_callback(transport);
1527                         } });
1528
1529
1530         } catch (e) {
1531                 exception_error("openArticleInNewWindow", e);
1532         }
1533 }
1534
1535 /* http://textsnippets.com/posts/show/835 */
1536
1537 Position.GetWindowSize = function(w) {
1538         w = w ? w : window;
1539         var width = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
1540         var height = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
1541         return [width, height]
1542 }
1543
1544 /* http://textsnippets.com/posts/show/836 */
1545
1546 Position.Center = function(element, parent) {
1547         var w, h, pw, ph;
1548         var d = Element.getDimensions(element);
1549         w = d.width;
1550         h = d.height;
1551         Position.prepare();
1552         if (!parent) {
1553                 var ws = Position.GetWindowSize();
1554                 pw = ws[0];
1555                 ph = ws[1];
1556         } else {
1557                 pw = parent.offsetWidth;
1558                 ph = parent.offsetHeight;
1559         }
1560         element.style.top = (ph/2) - (h/2) -  Position.deltaY + "px";
1561         element.style.left = (pw/2) - (w/2) -  Position.deltaX + "px";
1562 }
1563
1564
1565 function labeltest_callback(transport) {
1566         try {
1567                 var container = document.getElementById('label_test_result');
1568
1569                 container.innerHTML = transport.responseText;
1570                 if (!Element.visible(container)) {
1571                         Effect.SlideDown(container, { duration : 0.5 });
1572                 }
1573
1574                 notify("");
1575         } catch (e) {
1576                 exception_error("labeltest_callback", e);
1577         }
1578 }
1579
1580 function labelTest() {
1581
1582         try {
1583                 var container = document.getElementById('label_test_result');
1584
1585                 var form = document.forms['label_edit_form'];
1586
1587                 var sql_exp = form.sql_exp.value;
1588                 var description = form.description.value;
1589
1590                 notify_progress("Loading, please wait...");
1591
1592                 var query = "backend.php?op=pref-labels&subop=test&expr=" +
1593                         param_escape(sql_exp) + "&descr=" + param_escape(description);
1594
1595                 new Ajax.Request(query, {
1596                         onComplete: function (transport) {
1597                                 labeltest_callback(transport);
1598                         } });
1599
1600                 return false;
1601
1602         } catch (e) {
1603                 exception_error("labelTest", e);
1604         }
1605 }
1606
1607 function isCdmMode() {
1608         return !document.getElementById("headlinesList");
1609 }
1610
1611 function getSelectedArticleIds2() {
1612         var rows = new Array();
1613         var cdm_mode = isCdmMode();
1614
1615         if (cdm_mode) {
1616                 rows = cdmGetSelectedArticles();
1617         } else {
1618                 rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1619         }
1620
1621         var ids = new Array();
1622
1623         for (var i = 0; i < rows.length; i++) {
1624                 var chk = document.getElementById("RCHK-" + rows[i]);
1625                 if (chk && chk.checked) {
1626                         ids.push(rows[i]);
1627                 }
1628         }
1629
1630         return ids;
1631 }
1632
1633 function displayHelpInfobox(topic_id) {
1634
1635         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
1636
1637         var w = window.open(url, "ttrss_help",
1638                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
1639
1640         return false;
1641 }
1642
1643 function focus_element(id) {
1644         try {
1645                 var e = document.getElementById(id);
1646                 if (e) e.focus();
1647         } catch (e) {
1648                 exception_error("focus_element", e);
1649         }
1650         return false;
1651 }
1652
1653 function loading_set_progress(p) {
1654         try {
1655                 if (p < last_progress_point || !Element.visible("overlay")) return;
1656
1657                 debug("<b>loading_set_progress : " + p + " (" + last_progress_point + ")</b>");
1658
1659                 var o = document.getElementById("l_progress_i");
1660
1661 //              o.style.width = (p * 2) + "px";
1662
1663                 new Effect.Scale(o, p, {
1664                         scaleY : false,
1665                         scaleFrom : last_progress_point,
1666                         scaleMode: { originalWidth : 200 },
1667                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
1668
1669                 last_progress_point = p;
1670
1671         } catch (e) {
1672                 exception_error("loading_set_progress", e);
1673         }
1674 }
1675
1676 function remove_splash() {
1677         if (Element.visible("overlay")) {
1678                 debug("about to remove splash, OMG!");
1679                 Element.hide("overlay");
1680                 debug("removed splash!");
1681         }
1682 }