function slideJump() {
          if (window.location.hash == null) return;
          var sregex = /^#slide(\d+)/;
          var matches = sregex.exec(window.location.hash);
          var dest = null;
          if (matches != null) {
                  dest = parseInt(matches[1]);
          } else {
                  dest = findSlide(window.location.hash.slice(1));
          }
          if (dest != null)
                  go(dest - snum);
  }