function openWindow (win,largeur,hauteur) {
	MM_showHideLayers('window','','show');	
	if (document.getElementById) {
		document.getElementById("window").innerHTML = "<iframe src='' id='help' name='help' frameborder=no scrolling=no width='"+largeur+"' height='"+hauteur+"' style='background:url(../img/help/loading.gif) center center no-repeat'></iframe>";
	} else if (document.all) {
		document.all["window"].innerHTML = "<iframe src='' id='help' name='help' frameborder=no scrolling=no width='"+largeur+"' height='"+hauteur+"' style='background:url(../img/help/loading.gif) center center no-repeat'></iframe>'";
	}
	document.getElementById("help").src = win;
}