JavaScript - Dynamic Multiple-choice from checkboxws

Hi all,

I have a pretty good dynamic multiple-choice javascript that takes a selection from a multiple choice box, and creates another dynamic multiple choice box based on the previous selection.

I would like to see how this would be done using checkboxes as the source.

One would check a checkbox or checkboxes, say: [] Ohio, [] W. Virginia, [] Rhode Island, etc. And then a multiple choice box would populate based on one or more of the boxes checked. Say if only Ohio is checked, then the dynamic multiple choice populates only those selections based on Ohio.

If both Ohio and Rhode Island are checked, the the dynamic mulitple choice box would populate with selections for both of those state catagories.

I appreciate any help,

Chris