var isNS=(document.layers);
if(isNS)document.captureEvents(Event.MOUSEMOVE);
document.onmousemove=track;

function track(e) 
{
  var x=(isNS)?e.pageX:event.x; 
  var y=(isNS)?e.pageY:event.y;
  isvis(x,y);
}

function isvis(x,y) {
  if(isNS) {
    if(document.linkmenu.visibility!="hide") {
      if(x<30||x>170||y<80||y>240)document.linkmenu.visibility="hide";
    }
  } else if(linkmenu.style.visibility!="hidden") {
    if(x<30||x>170||y<80||y>240)linkmenu.style.visibility="hidden";
  }
}

function menu(n) {
  if(isNS) {
    document.linkmenu.visibility=(n!=0)?"visible":"hidden";
  } else linkmenu.style.visibility=(n!=0)?"visible":"hidden";
}