wmtt = null;
document.onmousemove = updateWMTT;

function updateWMTT(e) {
	x = (document.all) ? window.event.x + document.body.scrollLeft : e.pageX;
	y = (document.all) ? window.event.y + document.body.scrollTop  : e.pageY;
	if (wmtt != null) {
		wmtt.style.left = (x + 20) + "px";
		wmtt.style.top 	= (y + 20) + "px";
	}
}

function showWMTT(id) {
	wmtt = document.getElementById(id);
	wmtt.style.display = "block"
}

function hideWMTT() {
	wmtt.style.display = "none";
}

function switchlayer(Layer_Name)
{
  var GECKO = document.getElementById? 1:0 ;
  var NS = document.layers? 1:0 ;
  var IE = document.all? 1:0 ;

  if (GECKO)
       {document.getElementById(Layer_Name).style.display=
	   (document.getElementById(Layer_Name).style.display=='block') ? 'none' : 'block';}
  else if (NS)
       {document.layers[Layer_Name].display=(document.layers[Layer_Name].display==
	   'block') ? 'none' : 'block';}
  else if (IE)
       {document.all[Layer_Name].style.display=(document.all[Layer_Name].style.display==
	   'block') ? 'none' : 'block';}
}