title: Jquery validator alert gets triggered multiple times while press enter only in firefox
body: <p>Jquery validator triggers alert multiple times in firefox when pressing enter key,</p>
  
  <pre><code>showErrors: function(errorMap, errorList) {
      var summary = "You have the following errors: \n";
      $.each(errorList, function() {
          summary += " * " + this.message + "\n";
      });
      alert(summary);
      this.defaultShowErrors();
  }
  </code></pre>
  
  <p><a href="http://jsfiddle.net/xTdYr/97/" rel="nofollow">FIDDLE</a></p>