Fupdate.Append

docs

This class picks up where Fupdate leaves off and does pretty much the same thing. The only difference is that the result, instead of overwriting it, is injected into (or before, after, top, etc) it.

• I'm a list item that will be pushed down (but not replaced) when you submit the form above

new Fupdate.Append($('fupdateForm'), $('fupdateReply'), {
	inject: 'top'
});

...and that's pretty much all you gotta do.