function OuvrirPopup(page,nom,option) {
   window.open(page,nom,option);
}

function OuvrirPopupCentrer(page,nom,option){
	var top=(screen.height-hauteur)/2;
	var left=(screen.width-largeur)/2;
	window.open(page,nom,option+"top="+top+",left="+left);
}