function filmwindow(film, titre, height, width) {
	height = height ? height : 400;
	width = width ? width : 500;
	haut = ((screen.height - height)/2);
	gauche = ((screen.width - width)/2);
	window.open("film.php?id_document="+film+"&titre="+titre+"&h="+height+"&l="+width,null,'width='+width+',height='+height+',top='+haut+',left='+gauche+', status=no, directories=no, toolbar=no, location=no, menubar=no, scrollbars=no, resizable=no');
}