var mouseX = 0;
var mouseY = 0;

function getMouseXY(e) {
	try {
		if (BROWSER == IE) { // grab the x-y pos.s if browser is IE
			mouseX = event.clientX + document.body.scrollLeft;
			mouseY = event.clientY + document.body.scrollTop;
		} else {  // grab the x-y pos.s if browser is NS
			mouseX = e.pageX;
			mouseY = e.pageY;
		}  
		
		if (mouseX < 0){mouseX = 0};
		if (mouseY < 0){mouseY = 0};
		
		return true;
	} catch(err) {
		return false;
	}
}
document.onmousemove = getMouseXY;