DIV + "callback ?" when visible ?

[Mel]

i have about 100 topics, when the user clicks on a topic, i would like to
display the content in a DIV section below the topic, using "visible"
function.
so far NOT BAD, i am doing it.

however, i do not wish to load the content of 100 or more topics, since it
can take a lot of time.

QUESTION:-

is it possible to have the DIV content, something like
http://somwhere.com/content98.html, loaded dynamically when the user clicks
on a topic?
and displayed below the topic?

example would be so very very nice

much appreciated

Mel