var expDays = 1000;
var exp = new Date(); 
exp.setTime(exp.getTime() + (expDays*24*60*60*1000));

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

function SetCookie (name, value,domain) {  
    document.cookie = name + "=" + escape (value) + "; path=/; domain="+domain;
}

function DeleteCookie (name,domain) {  
    var now= new Date();  
    now.setTime (exp.getTime() - 1);  
    var cval = GetCookie (name);  
    document.cookie = name + "=; expires=" + now.toGMTString()+
    ("; domain="+domain);
}