function mouseLayerXY(e)
{
  if (!e) {e = window.event; e.target = e.srcElement}
  var x = 0;
  var y = 0;
  
  if (e.layerX)//Gecko
  {
    x = e.layerX - parseInt(getElementComputedStyle(e.target, "border-left-width"));
    y = e.layerY - parseInt(getElementComputedStyle(e.target, "border-top-width"));
  }
  else if (e.offsetX)//IE, Opera
  {
    x = e.offsetX;
    y = e.offsetY;
  }
  
  return {"x":x, "y":y};
}