function setupPreload() {
	var dom = YAHOO.util.Dom;	
	var preload = document.getElementById("preload");
	var preloads = preload.getElementsByTagName("div");
	var pattern = /url\((.+)\)/i;
	for (var i=0; i<preloads.length; i++) {
		var img = document.createElement("img");
		img.src = dom.getStyle(preloads[i],"background-image").replace(pattern,"$1");
	}	
}

YAHOO.util.Event.onContentReady("preload",setupPreload);