function initRollOverImages(){var image_cache=new Object();$(".rollover a img").not("[src*='_on.']").each(function(i){var imgsrc=this.src;var dot=this.src.lastIndexOf('.');var imgsrc_on=this.src.substr(0,dot)+'_on'+this.src.substr(dot,4);image_cache[this.src]=new Image();image_cache[this.src].src=imgsrc_on;$(this).hover(function(){this.src=imgsrc_on},function(){this.src=imgsrc})})}$(document).ready(initRollOverImages);