function WebForm_FireDefaultButton(event, target) {
  // Special override for textarea controls under firefox
  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;
}