if (document.all)
  document.styleSheets[0].addRule('div.sd_menu a', "width: '100%'");

function toggleSDMenu(obj) {
  if (document.getElementById('sd_menu_'+obj).style.visibility == 'visible') {
    document.getElementById('sd_menu_'+obj).style.visibility = 'hidden';
  } else {
    document.getElementById('sd_menu_'+obj).style.visibility = 'visible';
  }
}