function change(pro_name,i){

var pro = document.getElementById(pro_name);
var pro_arr = pro.getElementsByTagName("span");
	for (var m=0;m<pro_arr.length ;m++ )
	{
		pro_arr[m].className="unclecked";
		document.getElementById(pro_name+"_ul_"+m).style.display="none";
	}
	pro_arr[i].className="checked";
	document.getElementById(pro_name+"_ul_"+i).style.display="block";

}

/***********coockie操作****************/
function setCookie(name, value,date)//设置cookie值
{
    var Days = date; //此 cookie 将被保存 30 天
    var exp  = new Date();    //new Date("December 31, 9998");
    exp.setTime(exp.getTime() + Days*24*60*60*1000);
    document.cookie = name + "="+ escape (value) + ";path=/;expires=" + exp.toGMTString();
}

function quit()
{
    setCookie("myAccountID","",0);
    setCookie("ShopCart","",0);
    window.location.href="index.html";
}

function wc()
{
    window.location.href="index.html";
}