function GetCookieVal (offset)
{
    var endstr = document.cookie.indexOf (";", offset);
    if (endstr == -1)
    endstr = document.cookie.length;
    return unescape(document.cookie.substring(offset, endstr));
}

 

//取得名称为name的cookie值 

function GetCookie (name) {
    var arg = name + "=";
    var alen = arg.length;
    var clen = document.cookie.length;
    var i = 0;
    while (i < clen)
    {
        var j = i + alen;
        if (document.cookie.substring(i, j) == arg)
        return GetCookieVal (j);
        i = document.cookie.indexOf(" ", i) + 1;
        if (i == 0) break;
    }
    return null;
}

 

//删除名称为name的Cookie

function DeleteCookie (name) 

{   

    var exp = new Date();

    exp.setTime (exp.getTime() - 1);

    var cval = GetCookie (name);

    document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();

}

 
function LoginOut(){
    DeleteCookie("LoginTime");
    DeleteCookie("Mess");
    DeleteCookie("Type");
    window.location.href="/index.aspx";
}