$(document).ready(function() {
  hs.graphicsDir = "/lib/highslide/graphics/";
  hs.showCredits = false;

  var extensions = ["gif", "jpg", "jpeg", "png"];
  for (var i = 0; i < extensions.length; i++) {
    $("a[href$=" + extensions[i] + "] img").parent().click(function() {
      return hs.expand(this);
    });
  }
});