var ie4=document.all&&navigator.userAgent.indexOf("Opera")==-1
var ns6=document.getElementById&&!document.all
var ns4=document.layers
var posx; var posy;
if (ns4 || ns6)	window.captureEvents(Event.MOUSEMOVE);
document.onmousemove = coordonnee;
function coordonnee(e){
	if (ie4) {
		if(event!=null && document.body!=null && document.documentElement!=null){
			posx = event.clientX + document.body.scrollLeft + document.documentElement.scrollLeft;
			posy = event.clientY + document.body.scrollTop + document.documentElement.scrollTop;
		}
	}
	else {
		if(e){ 
			posx = e.pageX;
			posy = e.pageY;
		}
	}  
	if (posx < 0) posx = 0;
	if (posy < 0) posy = 0;
}