function SetCookie(sName, sValue)
{
    document.cookie = sName + '=' + escape(sValue) + '; path=/; expires= Mon, 31 Dec 2030 23:59:59 UTC';
}

function GetCookie(sName)
{
	var beg = document.cookie.indexOf(sName + '=');
	if (beg == -1)
		return null;
	var end = document.cookie.indexOf(';', beg + sName.length);
	if (end == -1)
		end = document.cookie.length;
	return unescape(document.cookie.substring(beg + sName.length + 1, end));
}

function DelCookie(sName)
{
    document.cookie = sName + '=' + escape('') + '; path=/; expires=Fri, 31 Dec 1999 23:59:59 GMT';
}