function init () {
	boucle ();
}
function boucle () {
	var x = "?";
	if (window.screenX) {
		x = "window.screenX = " + window.screenX;
	} else {
		if (window.screenLeft) {
			x = "window.screenLeft = " + window.screenLeft;
		}
	}
	var y = "?";
	if (window.screenY) {
		y = "window.screenY = " + window.screenY;
	} else {
		if (window.screenTop) {
			y = "window.screenTop = " + window.screenTop;
		}
	}
	/*document.formulaire.texteX.value = x;
	document.formulaire.texteY.value = y;*/
	
	document.getElementById("tx").value = x;
	document.getElementById("ty").value = y;
	setTimeout("boucle()", 30);
}