triple select list box generator for form not working

Hello everyone,

I have been having trouble in getting 3 dynamic select list boxes in my form to work properly(without page refresh).

I finally found a Jquery double or triple dropdown list generator @ http://dailyphp.blogspot.com/

It works to an extend but i think the first select list box is not connected to the 3 list box. They are not in sync.

Can some one take a look at my code and help me get all my list boxes to sync.

Also, I want to add the (text)  "category" , "first-subcategory", "second-subcategory" in front of the respective list box when displayed at the front end and I wanted the selected items values to be captured from these list boxes and passed to an other variable "categories","first-subcategories","second-subcategories"(all plurals) respectively so that the I could parse the form to a php script on submit and capture all user inputs into my database table.

Thanks in advance :-)