var loginStarted=false;
  var isNav, isIE;
  
  if (parseInt(navigator.appVersion) >= 4)
  {
    if (navigator.appName == 'Netscape' )
    {
      isNav = true;
    }
    else
    {
      isIE = true;
    }
  }

  document.onkeydown = startLogin;
  
  if (isNav) 
     document.captureEvents(Event.KEYDOWN);
  
  function startLogin(keyEvent)
  {
    if(isNav)
    {
       if(keyEvent.target.name == 'fulltextsearch' && keyEvent.which == 13)
          Search(document.theform.fulltextsearch.value);
    }
    else if(isIE)
    {
       if(window.event.srcElement.name == 'fulltextsearch' && window.event.keyCode == 13)
          Search(document.theform.fulltextsearch.value);    }
  }