// popups pied de page
function popup(page,largeur,hauteur,scrollbars) {
	if (typeof(fenetre)!='undefined'){
		fenetre.close();
	}
	var origineX;var origineY;var Lecran;var Hecran;var CalageH=0;var CalageV =-100;
	if (navigator.appVersion.substring(0,1) >= 4){
		if (screen.height <= 768){Lecran = largeur;Hecran = hauteur;}
		else{Lecran = screen.width;Hecran = screen.height;}
	}
	else{Lecran = largeur;  Hecran = hauteur;}
	origineX = Math.round((Lecran-largeur)/2)+ CalageH;origineY = Math.round((Hecran-hauteur)/2)+ CalageV; 
	fenetre = window.open(page,'fenetre',"status,height=" + hauteur + ",width=" + largeur + ",resizable=no,left=" + origineX + ",top=" + origineY + ",screenX=" + origineX + ",screenY=" + origineY + ",scrollbars=" + scrollbars + ",status=no");
	fenetre.focus();  
}