// Modified script from MS library
function WebForm_FireDefaultButton(event, target) {
  if (event.keyCode == 13 && !(event.srcElement && (event.srcElement.tagName.toLowerCase() == "textarea"))) {
    var defaultButton;
    if (__nonMSDOMBrowser) {
      defaultButton = document.getElementById(target);
    } else {
      defaultButton = document.all[target];
    }
    // Changed -->
    if (defaultButton && typeof(defaultButton.click) == "undefined") {
      defaultButton.click = function() {
        var result = true;
        if (defaultButton.onclick) 
          result = b.onclick();
        if (typeof(result) == "undefined" || result)
          eval(defaultButton.href);
      }
    }
    // <--

    if (defaultButton && typeof(defaultButton.click) != "undefined") {
      defaultButton.click();
      event.cancelBubble = true;
      if (event.stopPropagation) event.stopPropagation();
      return false;
    }
  }
  return true;
}