function foto_amplica(descricao,img, x, y) {
	var LeftPosition = (screen.width) ? (screen.width-x)/2 : 0;		
	var TopPosition = (screen.height) ? (screen.height-y)/2 : 0;		
	var pop = window.open("images/centro_ecologico/fotos/foto.asp?descricao="+descricao+"&foto="+img,"_blank","width="+(x+38)+",height="+(y+36)+",top="+TopPosition+",left="+LeftPosition+",scrollbars=1");

	if (null == pop || true == pop.closed){
		alert("ATENÇÃO! Bloqueador de popups! favor desativar");
	}
}