Like the original poster who inspired the creation of this, I have been having a really hard time trying to simply make a link to an external url appear in a popup box- this should be trivial. In fact, you can apparently do it by adding a class="thickbox" to a link, but it never works for me.
This plugin does work! But- I really want to it to behave like thickbox- make it modal, and gray out the window in the background. How hard would it be to do this?