var preload_image_object = new Array();
     var iii = 0;
     if (document.images && document.styleSheets)
         for (var stylesheetI = 0; stylesheetI < document.styleSheets.length; stylesheetI++) {
             if (document.styleSheets[stylesheetI].rules)
                 for (var ruleI = 0; ruleI < document.styleSheets[stylesheetI].rules.length; ruleI++) {
                 var bi;
                 if (document.styleSheets[stylesheetI].rules[ruleI].style && (bi = document.styleSheets[stylesheetI].rules[ruleI].style.backgroundImage))
                     if (bi != "none") {
                     var q1 = bi.substring(bi.indexOf('(') + 1, bi.lastIndexOf(')'));
                     var q2 = q1;
                     preload_image_object[iii] = new Image();
                     preload_image_object[iii++].src = q1;
 
                 }
             }
             else if (document.styleSheets[stylesheetI].cssRules)
                 for (var ruleI = 0; ruleI < document.styleSheets[stylesheetI].cssRules.length; ruleI++) {
                 var bi;
                 if (document.styleSheets[stylesheetI].cssRules[ruleI].style && (bi = document.styleSheets[stylesheetI].cssRules[ruleI].style.backgroundImage))
                     if (bi != "none") {
                     var q1 = bi.substring(bi.indexOf('(') + 1, bi.lastIndexOf(')'));
                     var q2 = q1;
                     preload_image_object[iii] = new Image();
                     preload_image_object[iii++].src = q1;
 
                 };
             };
     };