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