To make a table of your choice sortable, there are three steps:

1. Download the Javascript library
2. Include the Javascript library, by putting a link to it in the HEAD of your page, like so: <script src="sorttable.js"></script>
3. Mark your table as a sortable one by giving it a class of "sortable": <table class="sortable">

Note that the library's JavaScript file is called sorttable (two Ts), but the class you add to the table is sortable (one T). And that's all you need. Your table will now have column sorting available by clicking the headers.