Popup Commnet Form for Nested Reply

Hey everyone, I am utilizing the threaded comments for my blog, and I would like to add a popup box for the nested replies (by default it jumps to the form at the bottom of the page when you press “reply”). Is there a plugin specific solution for this? I’m a little rusty with JavaScript, but I think I can just use a simple script, but I’m wondering how the comment ID is going to fit in there. Any help would be appreciated, thanks.

Justin