function open_popup(page,largeur,hauteur,nom) 
{ 
	window.open(page,nom,"status=no,scrollbars=yes,resizable=no,height="+hauteur+",width="+largeur+",top=0,left=0"); 
}

function chiffres(event) {
	// Compatibilité IE / Firefox
	if(!event && window.event) {
		event=window.event;
	}
	// IE
	if((event.keyCode < 48 || event.keyCode > 57) && event.keyCode != 46 && event.keyCode != 8 && event.keyCode != 110 && event.keyCode != 37 && event.keyCode != 39) {
		event.returnValue = false;
		event.cancelBubble = true;
	}
	// DOM
	if((event.which < 48 || event.which > 57) && event.which != 46 && event.which != 8 && event.which != 110 && event.which != 37 && event.which != 39) {
		event.preventDefault();
		event.stopPropagation();
	}
}