cookie

function JSCookie()
{
this.GetCookie = function(key)
{
var value = document.cookie.match(new RegExp(";?"+key+"=([^;]*)","i"));
return unescape(value?value[1]:"");
};
this.GetChild = function(cookiekey,childkey)
{
var child = this.GetCookie(cookiekey);
var getvalue = child.match(new RegExp("&?"+childkey+"=([^&;]*)","i"));
return unescape(getvalue?getvalue[1]:"");
};
this.SetCookie = function(key,value,expire,path)
{
var cookie = "";
if(key && value) cookie += key + "=" + escape(value) + ";";
if(expire) cookie += "expires=" + expire.toGMTString() + ";";
if(path) cookie += "path=" + path + ";";
document.cookie = cookie;
};
this.Expire = function(key)
{
expire_time = new Date();
expire_time.setFullYear(expire_time.getFullYear() - 1);
var cookie = " " + key + "=e;expires=" + expire_time + ";"
document.cookie = cookie;
}
}

var cookie = new JSCookie();