var mouseCoord = null;

function getMouseCoordinates(e) {
	try {
		var posx = 0;
		var posy = 0;
		if(!e) {
			e = window.event;
		}
		if(e.pageX || e.pageY) {
			posx = e.pageX;
			posy = e.pageY;
		} else if(e.clientX || e.clientY) {
			posx = e.clientX + 
				document.body.scrollLeft + 
				document.documentElement.scrollLeft;
			
			posy = e.clientY + 
				document.body.scrollTop + 
				document.documentElement.scrollTop;
		}
		mouseCoord = {x:posx, y:posy};	
	} catch(ex) {
		return;
	}
};

document.onmousemove = getMouseCoordinates;