function arGetCookie (name) {
	var a = document.cookie.split (';'); var t = '';
	for (var i = 0, l = a.length; i < l; i ++) {
			t = a[i].split ('=');
			if (t[0].replace (/^\s+|\s+$/g, '') == name) {
				return (t.length > 1 ? unescape (t[1].replace (/^\s+|\s+$/g, '')) : null);
			}
	}
	return null;
}
var oldcookie = arGetCookie('rsidx');