//验证码部分
function RefreshValdisplayDateCodeImage(ValdisplayDateCodeImageControl){
      ValdisplayDateCodeImageControl.src = ValdisplayDateCodeImageControl.src + '?code=' + RandomNum(10);
  }

  function RandomNum(n){
      var rnd = '';
      for (var i = 0; i < n; i++) 
          rnd += Math.floor(Math.random() * 10);
      return rnd;
  }

  function DefaultButton(event, linkOpenType){
      if (event.keyCode == 13 && !(event.srcElement && (event.srcElement.tagName.toLowerCase() == "textarea"))) {
          var defaultButton = $(linkOpenType);
          if (defaultButton && typeof(defaultButton.click) != "undefined") {
              defaultButton.click();
              event.cancelBubble = true;
              if (event.stopPropagation) 
                  event.stopPropagation();
              return false;
          }
      }
      return true;
  }