$(document).ready(function(){

	$(".sf-menu >li[id^='roll'] >a").mouseover(function () {
        imgsrc = $(this).children("img").attr("src");
        matches = imgsrc.match(/_0/);
        if (matches) {
            imgsrcON = imgsrc.replace(/_0.png$/gi, "_1.png");
            $(this).children("img").attr("src", imgsrcON);
        }
	});
	
	$(".sf-menu >li[id^='roll'] >a").mouseout(function () {
        imgsrc = $(this).children("img").attr("src");
        matches = imgsrc.match(/_1/);
        if (matches) {
            imgsrcON = imgsrc.replace(/_1.png$/gi, "_0.png");
            $(this).children("img").attr("src", imgsrcON);
        }
	});
	
});