Issue #1516274 by LeoDoms: Clash between "Hierarchical select" and "Clientside validation" module.

clientside_validation.js

@@ -7,7 +7,7 @@
       else {
         var update = false;
         jQuery.each(Drupal.settings.clientsideValidation.forms, function (f) {
-          if ($(context).find('#' + f).length || $(context).attr('id') == f) {
+          if ($(context).find('#' + f).length || $(context).is('#' + f)) {
             update = true;
           }
         });