lastshown = "";
timerID   = 0;

function attackenable() {
if(timerID)
 {
 clearTimeout(timerID);
 if (document.getElementById('BATBTN'))
  document.getElementById('BATBTN').disabled=false;
 }
}

function shipinfovis(what){

 if (lastshown>"") {
 document.getElementById(lastshown).style.visibility="hidden";
 }
 if (what.selectedIndex>=0)
  {lastshown = what.name+what.value;
   document.getElementById(what.name+what.value).style.zIndex=255;
   document.getElementById(what.name+what.value).style.visibility="visible";}
 else
  {lastshown="";}
}

function shipinfohide(what){

 if (lastshown>"") {
 document.getElementById(lastshown).style.visibility="hidden";
 lastshown="";
 }
}