wmtt = null;

	function show(el) {
		wmtt = document.getElementById(el);
		wmtt.style.display = "block";	
	}
	function hide() {
		wmtt.style.display = "none";	
	}
	
	document.onmousemove = updateWMTT;
	function updateWMTT(e){
	  if (wmtt != null) {
    		x = (document.all) ? window.event.x + wmtt.offsetParent.scrollLeft : e.pageX;
    		y = (document.all) ? window.event.y + wmtt.offsetParent.scrollTop  : e.pageY;
    		wmtt.style.left = (x + 20) + "px";
    		wmtt.style.top   = (y + 20) + "px";
  		}		
	}