function PopupCentrer(page,largeur,hauteur,options) {
  var top=(screen.height-hauteur)/2;
  var left=(screen.width-largeur)/2;
  window.open(page,"","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+options);
}
function show(id){
	if(id == 1){
		document.getElementById("galerie-1").style.display = 'block';
		document.getElementById("galerie-2").style.display = 'none';
		document.getElementById("galerie-3").style.display = 'none';
	}else{
		if(id == 2){
			document.getElementById("galerie-1").style.display = 'none';
			document.getElementById("galerie-2").style.display = 'block';
			document.getElementById("galerie-3").style.display = 'none';
		}else{
			document.getElementById("galerie-1").style.display = 'none';
			document.getElementById("galerie-2").style.display = 'none';
			document.getElementById("galerie-3").style.display = 'block';
		}
	}
}