function openURL()
  {
  selInd = document.dropdownmenu.aaa.selectedIndex;
  goURL = document.dropdownmenu.aaa.options[selInd].value;
  top.location.href = goURL;
  }
   
  function openURL2()
  {
  selInd = document.dropdownmenu.aab.selectedIndex;
  goURL = document.dropdownmenu.aab.options[selInd].value;
  top.location.href = goURL;
  }