Vista - checkboxlist - items on change event

i've tried to add an onchange event to my checkboxes(created dynamically)

chkboxlist.attributes.add("onchange", "dothat();")

but it renders the onchange to the table it creates and not to the list
items. I need to add the onchange event to all the checkbox(s) that are
created dynamically. I've even tried

dim li as ListItem
for each li in chkboxlist
li.attributes.add("onchange", "dothat();")
next

but it still renders to the table that the chkboxlist creates rather than
the items.

Can this be done? If so can someone give some good examples?


thanks!

jason