$(function(){
	$("ul.sub").hide();
	$("div#menu ul li").hover(function(){
		$("ul:not(:animated)",this).slideDown("fast");
	},
	function(){
		$("ul",this).slideUp("fast");
	});

	$("div#menu ul li#l1").hover(function(){
		$("div#menu ul li#l1 a img").attr("src","02_img/tab_sinfoW.gif");
	},
	function(){
		$("div#menu ul li#l1 a img").attr("src","02_img/tab_sinfo.gif");
	});
	$("div#menu ul li#l2").hover(function(){
		$("div#menu ul li#l2 a img").attr("src","02_img/tab_hotnewsW.gif");
	},
	function(){
		$("div#menu ul li#l2 a img").attr("src","02_img/tab_hotnews.gif");
	});
	$("div#menu ul li#l3").hover(function(){
		$("div#menu ul li#l3 a img").attr("src","02_img/tab_historyW.gif");
	},
	function(){
		$("div#menu ul li#l3 a img").attr("src","02_img/tab_history.gif");
	});
	$("div#menu ul li#l4").hover(function(){
		$("div#menu ul li#l4 a img").attr("src","02_img/tab_serviceW.gif");
	},
	function(){
		$("div#menu ul li#l4 a img").attr("src","02_img/tab_service.gif");
	});

});