/**
 * --------------------------------------------------------------------
 * jQuery-Plugin "preloadCssImages"
 * by Scott Jehl, scott@filamentgroup.com
 * http://www.filamentgroup.com
 * reference article: http://www.filamentgroup.com/lab/update_automatically_preload_images_from_css_with_jquery/
 * demo page: http://www.filamentgroup.com/examples/preloadImages/index_v4.php
 * 
 * Copyright (c) 2008 Filament Group, Inc
 * Dual licensed under the MIT (filamentgroup.com/examples/mit-license.txt) and GPL (filamentgroup.com/examples/gpl-license.txt) licenses.
 *
 * Version: 4.0, 07.24.2008
 * Changelog:
 *   02.20.2008 initial Version 1.0
 *    06.04.2008 Version 2.0 : removed need for any passed arguments. Images load from any and all directories.
 *    06.21.2008 Version 3.0 : Added options for loading status. Fixed IE abs image path bug (thanks Sam Pohlenz).
 *    07.24.2008 Version 4.0 : Added support for @imported CSS (credit: http://marcarea.com/). Fixed support in Opera as well.
 * --------------------------------------------------------------------
 */


jQuery.preloadCssImages=function(settings){settings=jQuery.extend({statusTextEl:null,statusBarEl:null},settings);var allImgs=[];var k=0;var sheets=document.styleSheets;for(var i=0;i<sheets.length;i++){var cssPile='';var csshref=(sheets[i].href)?sheets[i].href:'window.location.href';var baseURLarr=csshref.split('/');baseURLarr.pop();var baseURL=baseURLarr.join('/');if(baseURL!="")baseURL+='/';if(sheets[i].cssRules){var thisSheetRules=sheets[i].cssRules;for(var j=0;j<thisSheetRules.length;j++){if(sheets[i].cssRules[j].constructor=='CSSImportRule'){var importSheetRules=sheets[i].cssRules[j].styleSheet.cssRules;for(var x=0;x<importSheetRules.length;x++){cssPile+=importSheetRules[x].cssText;}}
else{cssPile+=thisSheetRules[j].cssText;}}}
else{if(sheets[i].imports.length>0){for(var m=0;m<sheets[i].imports.length;m++){cssPile+=sheets[i].imports[m].cssText;}}
else{cssPile+=sheets[i].cssText;}}
var imgUrls=cssPile.match(/[^\(]+\.(gif|jpg|jpeg|png)/g);var loaded=0;if(imgUrls!=null&&imgUrls.length>0&&imgUrls!=''){var arr=jQuery.makeArray(imgUrls);jQuery(arr).each(function(){allImgs[k]=new Image();allImgs[k].src=(this.charAt(0)=='/'||this.indexOf('http://')>-1)?this:baseURL+this;if(allImgs[k].src.lastIndexOf('http://')>0){allImgs[k].src=allImgs[k].src.split('%22')[1];}
$(allImgs[k]).load(function(){loaded++;if(settings.statusTextEl){$(settings.statusTextEl).html('<span class="numLoaded">'+loaded+'</span> of <span class="numTotal">'+allImgs.length+'</span> loaded (<span class="percentLoaded">'+(loaded/allImgs.length*100).toFixed(0)+'%</span>) <span class="currentImg">Now Loading: <span>'+allImgs[loaded-1].src.split('/')[allImgs[loaded-1].src.split('/').length-1]+'</span></span>');}
if(settings.statusBarEl){var barWidth=$(settings.statusBarEl).width();$(settings.statusBarEl).css('background-position',-(barWidth-(barWidth*loaded/allImgs.length).toFixed(0))+'px 50%');}});k++;});}}
return allImgs;}