$(function(){
	$(".rollover").mouseover(function(){ rollover("#"+this.id); });
	$(".rollover").mouseout(function(){  rollover("#"+this.id); });
});

function rollover(id){
	var src = $(id).attr("src");
	var bgi = $(id).css("background-image");
	bgi = bgi.replace("url(","");
	bgi = bgi.replace(")","");
	bgi = bgi.replace(/"/g,"");
	
	if(bgi == "none") return ;
	
	$(id).attr("src",bgi);
	$(id).css("background-image","url("+src+")");
	
}