Dynamic Nested List

I'm making a nested list except the <ul></ul> of the next "page" needs to be filled by an ajax request. However, when I fill in the <ul> with list items (<li>), they don't appear as list items after the page transition. Any suggestions on having the <ul> filled after the page transition or does anybody have any sample code filling in nested list items with ajax calls to external xml?

Thanks,

Doc