charlietfl thanks for your answer (the top part).
I kind of understand the bottom part, but I need some code examples. Is this where I would use the live() method?
<script type="text/javascript">
$("document").ready( function () {
$(".whichContent").click(function(e) {
X = e.target.value;
$("#userData").load("AJAX.htm #"+X);
// USE LIVE() TO BIND TO CURRENT ELEMENTS HERE?
$});
});
</script>