$(document).ready(function() {
  $(".test2").fancybox({
    overlayShow: true,
    overlayOpacity: 0.9
  });
  $(".test3").fancybox({
    frameWidth: 425,
    frameHeight: 355,
    overlayShow: true,
    overlayOpacity: 0.9
  });
   $(".imgbig").fancybox({
    overlayShow: true,
    overlayOpacity: 0.9
  });
});