// JavaScript Document

function miniatura_in(y) { //v3.0
  	new Effect.Opacity('opacity_demo'+y, { from: 0.5, to: 1, duration: 0.4 }); 
  	return false;
}
function miniatura_out(y) { //v3.0
	new Effect.Opacity('opacity_demo'+y, { from: 1, to: 0.5, duration: 0.4 }); 
	return false;
}