Sorting ComboBox?

[anton-io!]

Does anyone know how to sort a combo box alphabetically in javascript?

I have 2 combo boxes - user selects one, 2nd combo box is populated (would like this one to be sorted in ascending order)

Example: http://www.onlinejamm.com/sites/add-url.php

Select: Programming Languages from category to see example

Thanks greatly! :D