function WebForm_FireDefaultButton(event, target) {
   //event.srcElement doesn't work in FF so we check whether
   //it or event.target exists, using whichever is returned
   var element = event.target || event.srcElement;
   if (event.keyCode == 13 && !(element && element.tagName.toLowerCase() == "textarea")) {
      var defaultButton;
      if (__nonMSDOMBrowser) {
         defaultButton = document.getElementById(target);
         }
      else {
         defaultButton = document.all[target];
         }
      if (defaultButton && typeof defaultButton.click != "undefined") {
         defaultButton.click();
         event.cancelBubble = true;
         if (event.stopPropagation) {
            event.stopPropagation();
            }
         return false;
         }
      }
   return true;
   }