Demo 5 does not scroll smoothly as in demo version

[wilkesvb]

See: http://codepen.io/wilkesvb/pen/WbORGX

[wmh]

ul requires a width bigger than it's parent

ul {
    display: inline-block;
    width: 900px;
  }

distance 1 is incorrect, remove it

$('#demo5').scrollbox({
  direction: 'h'
});