Want to use this with a Colorbox lightbox in justified image grid

Not really an issue, but a request for help.  I am trying to use this with justified image grid in wordpress using the colorbox lightbox.  But I think the problem is that this code executes when the page is loaded, and the colorbox only pulls in a flickr image later, when a thumbnail is selected.  Any advice for how to change the code to trigger off another event?
