// JScript 文件

    function setCookie(name,value)
    {
        var Days = 30;
        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)
    {
        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();
    }