function setCookie(name,value){
	var exp  = new Date();
	exp.setTime(exp.getTime() + 5*60*1000);
	document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString() + ";path=/";
}
function getCookie(name){
	var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)");
	if(arr=document.cookie.match(reg)) return unescape(arr[2]);
	else return null;
}
function delCookie(name){
	var exp = new Date();
	exp.setTime(exp.getTime() - 1);
	var cval=getCookie(name);
	if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString() + ";path=/";
}
$(function(){
	tab("home_nav",0);
	
});
function tab(id,tabno){
	if(getCookie(id)!=null) tabno=getCookie(id);
	$($("#"+id+" ul.nav_tab li").removeClass("active")[tabno]).addClass("active");
	$($("#d_show"+" div.tab-element").hide()[tabno]).show();
	$("#"+id+" ul.nav_tab li").click(function(){
		var idx;
		idx=$("#"+id+" ul.nav_tab li").index(this);
		$($("#"+id+" ul.nav_tab li").removeClass("active")[idx]).addClass("active");
		$($("#d_show"+" div.tab-element").hide()[idx]).show();
		setCookie(id,idx);
	});
}