function movemenu()
{
  var winW
    = self.innerWidth
    ? self.innerWidth
    : document.body.clientWidth;

  var winH
    = self.innerHeight
    ? self.innerHeight
    : document.body.clientHeight;

	var pos
	 = window.innerHeight
	 ? window.pageYOffset
	 : document.body
	   ? document.body.scrollTop
	   : 0;

	var obj
    = document.getElementById
    ? document.getElementById('pijltje').style
    : document.all
      ? document.all['pijltje'].style
      : document.layers['pijltje'];
	

	pos += winH - 40;
	if (pos < winH) { pos = winH; }
	
	with (obj)
	{
    visibility  = '';
    left        = (.5 * winW + 340) + 'px';
    top         = pos + 'px';
  }
  
	mmTimer = setTimeout('movemenu()',50);
}

movemenu();