var ie = document.all ? true : false;
if (!ie) document.captureEvents(Event.MOUSEMOVE);
document.onmousemove = getMouseXY;
var mouseX = 0;
var mouseY = 0;

function getMouseXY(e) {
  	if (ie) { 
    	mouseX = event.clientX + document.body.scrollLeft;
    	mouseY = event.clientY + document.body.scrollTop;
  	} else {  
    	mouseX = e.pageX;
    	mouseY = e.pageY;
  	}  
  
  	if (mouseX < 0) { 
  		mouseX = 0;
  	}
  
  	if (mouseY < 0) {
  		mouseY = 0;
  	}  
  
  	return true;
}