function SetCookie(name, value)
{
	var d = new Date();
	d.setYear(d.getFullYear()+1);
    document.cookie = name + "=" + escape(value) + "; expires=" + d.toGMTString();
}

function GetCookie(name)
{
	var dc = document.cookie;
	var prefix = name + "=";
	var begin = dc.indexOf("; " + prefix);

	if (begin == -1)
	{
		begin = dc.indexOf(prefix);
		if (begin != 0) return null;
	}
	else
	{
		begin += 2;
	}

	var end = dc.indexOf(";", begin);
	if (end == -1)
	{
		end = dc.length;
	}
	return unescape(dc.substring(begin + prefix.length, end));
}

function DeleteCookie(name)
{
	if (GetCookie(name))
	{
		document.cookie = name + "=; expires=Thu, 01-Jan-70 00:00:01 GMT";
	}
}