function containsDOM (container, containee) {
  var isParent = false;
  do {
    if ((isParent = container == containee))
      break;
    containee = containee.parentNode;
  }
  while (containee != null);
  return isParent;
}

function checkMouseEnter (element, evt) {
  if (element.contains && evt.fromElement) {
    return !element.contains(evt.fromElement);
  }
  else if (evt.relatedTarget) {
    return !containsDOM(element, evt.relatedTarget);
  }
}

function checkMouseLeave (element, evt) {
  if (element.contains && evt.toElement) {
    return !element.contains(evt.toElement);
  }
  else if (evt.relatedTarget) {
    return !containsDOM(element, evt.relatedTarget);
  }
}


function ShowConMenu(d, left, top) {
	if (document.all) 
	{
		menudiv=eval("document.all." +d);
		menudiv.style.visibility='visible';
		menudiv.style.display='block'; 
		menudiv.style.zIndex='10'; 
		menudiv.style.position='absolute';
		menudiv.style.left = left + "px";
		menudiv.style.top = (top-2) + "px";
	}
	else
	{
		menudiv = document.getElementById(d);
		menudiv.style.visibility="visible";
		menudiv.style.display = "block"; 
		menudiv.style.zIndex="10"; 
		menudiv.style.left = left + "px";
		menudiv.style.top = top + "px";
	}
}

function HideConMenu(d) {
	if ( d != "" )
	{
		menudiv = document.getElementById(d);
		menudiv.style.display = "none"; 
		menudiv.style.visibility = "hidden"; 
	}
	else
	{
		menudiv = document.getElementById('menu1');
		menudiv.style.display = "none"; 
		menudiv.style.visibility = "hidden"; 
		menudiv = document.getElementById('menu2');
		menudiv.style.display = "none"; 
		menudiv.style.visibility = "hidden"; 
	}
}