function setCookie(name,value,Days)//两个参数，一个是cookie的名子，一个是值
{
	if(Days==0)
	{
		document.cookie = name + "="+ escape (value);
	}
	else
	{
		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 delConfirm()
{
	var question=confirm("是否要删除？");
	if(question){return true;}else{return false;}
}