/*
菜单js效果
html : <img src="images/menu1.gif" overSrc="images/menu1_Over.gif" alt="公司介绍" />
*/
$(document).ready(function(){
	$.each($("#menu img") , function(i,n){
		var outSrc = $(n).attr("src");
		$(n).attr("outSrc",outSrc);
		var img = new Image;
		img.src=$(n).attr("overSrc");
	});
	$("#menu img").hover(
		function(){
			$(this).fadeOut("fast");
			$(this).attr("src",$(this).attr("overSrc"));
			$(this).fadeIn("fast");
		},
		function(){
			$(this).attr("src",$(this).attr("outSrc"));
		}
	);
});