function SetCookie(name,value)//两个参数，一个是cookie的名子，一个是值
{
    var Days = 3000; //此 cookie 将被保存 3000 天
    var exp  = new Date();    //new Date("December 31, 9998");
    exp.setTime(exp.getTime() + Days*24*60*60*1000);
    document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
}
function getCookie(name)//取cookies函数        
{
    var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));
     if(arr != null) return unescape(arr[2]); return null;

}
function delCookie(name)//删除cookie
{
    var exp = new Date();
    exp.setTime(exp.getTime() - 1);
    var cval=getCookie(name);
    if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();
}

function setUserCookie()
{
	var ck = document.getElementById("ck");
	var user = document.getElementById("user").value;
	if(ck.checked) {
	    SetCookie("reneemall1111222",user);
	}
//	else delCookie("reneemall1111222");
}

function getUserCookie(){
	var m = getCookie("reneemall1111222");
	if(m == null) return "";
	return m;
}