var MousePosX = 0;
var MousePosY = 0;

function GetMouseXY(e) {
	var IE = navigator.appName=="Microsoft Internet Explorer";
  if (IE) { 
    tempX = event.clientX + document.body.scrollLeft
    tempY = event.clientY + document.body.scrollTop
  } else {  // grab the x-y pos.s if browser is NS
    tempX = e.pageX
    tempY = e.pageY
  }  
  if (tempX < 0){tempX = 0}
  if (tempY < 0){tempY = 0}  
	MousePosX = tempX;
	MousePosY = tempY;
  return true;
}

document.onmousemove = GetMouseXY;
document.onmousedown = GetMouseXY;