If you want to use bootstrap's typeahead functionality from inside a modal window such as lightbox or facebox then you are probably going to have to make a small edit to one of the bootstrap files.

Open up bootstrap-typeahead.js in your text editor of choice and then add a z-index of 9999, like so;

  this.$menu.css({
    top: pos.top + pos.height,
    left: pos.left,
    'z-index': 9999
  })

You probably don't need to go as high as 9999 but it worked for me!

It took me way too long to get this working, other bootstrap things appear to work fine inside modals.

Why not read some more of our JavaScript posts?