I know that sounds strange but I came across this website today that uses this ability and I've been going nuts trying to figure out how they do it.

The website is hxxp://search.reel-scout.com/

Also here is a screenshot of the options I am speaking of



There is a combolistbox that has a list of topics.

Depending on what topic you choose will determine what checklistbox option will appear in the check list box.

What are they doing there to create that option? I was thinking that maybe they created 20 checkedlistboxes and then if the selection of the combolistbox is "THIS" then they set the getfocus to that checkedlistbox but that didn't quite work for me.

any idea?

Thanks