Strange Colorbox Bug

Hey guys,

I have a strange bug with my modal window popup.

Click on the “Purchase” button in the page: http://bit.ly/16Kxfhv

Then click anywhere outside the modal window and click on the “Purchase” button for a second time.

My form doesn’t show up anymore.

I don’t know where the problem lies exactly. Any ideas?

The modal window is loaded with colorbox.

many thanks for your help
Andy