function showTab(did){
  var tabs = new Array('submitted', 'bookmarks', 'rated');
  for(var i=0; i < tabs.length; i++){
    if(tabs[i] != did)
      document.getElementById('user_widgets_' + tabs[i]).style.display = 'none';
    else
      document.getElementById('user_widgets_' + tabs[i]).style.display = 'block';
  }
}