Re: [Solved] Cascading Combo Boxes – Help Needed

[TheDoc]

Ah yes. So that’s done probably using a number of languages. In Crucial’s case, the form itself is probably built using .NET (note the .aspx in the URL) and the filtered selections coming up in Steps 2 and 3 are probably doing using AJAX (because the page doesn’t reload).

Having said that, they could be doing something completely different than that, the options are rather open ended.

This little tutorial might make things a bit clearer:

http://www.99points.info/2010/06/ajax-tutorial-dynamic-loading-of-combobox-using-jquery-and-ajax-in-php/