function get_cookie_by_name(name)
{
	var allcookies = document.cookie;
	if (allcookies == ''){ return ''; }
	var pos = allcookies.indexOf(name + '=');
	if (pos != -1){
		var start = pos + name.length + 1;
		var end = allcookies.indexOf(';', start);
		if (end == -1){ end = allcookies.length; }
		var value = allcookies.substring(start, end);
		return unescape(value);
	}
	return '';
}