function apri(folder,page){
	//folder = "prodotti/";
	//page = "popup_foto.htm"
	ext = ".html";
	slash = "/";
	address = folder+slash+page+ext;
	window.open(address,"","height=500,width=500,toolbar=0,scrollbars=1,resizable=1, screenX=0,screenY=0,left=30,top=10");
}