It's a custom item so the html coding was done manually (a lot of it was simply cut and pasted from various samples of HTML form code found on the internet)--we don't have an automatic generator for this kind of thing (see Custom Items in the users guide). However, if you open the HTML file in a text editor, you will see the patterns and modifications are pretty easy to make from there. If not, or if you run into any specific problem, please let us know.