Fix for issue jquerytools#733

Author: Alexander Grein

src/validator/validator.js

@@ -258,10 +258,10 @@
 		return v === '' || new RegExp("^" + el.attr("pattern") + "$").test(v);
 	});
 
-	v.fn(":radio", "Please select an option.", function(el) {
+	v.fn(":radio[required]", "Please select an option.", function(el) {
 		var	checked = false;
 		var	els = $("[name='" + el.attr("name") + "']").each(function(i, el) {
-			if ($(el).is(":checked")) {
+			if ($(el).is(":checked") || checked) {
 				checked = true;
 			}
 		});