Weird behavior when changing directory name

I have created something cool for my purposes here:

http://hinternet.com.au/projects/fullcalendar-1.4.8/index.php

To try to declutter it, I have cloned everything to a new directory named calendar:

http://hinternet.com.au/projects/calendar/index.开发者_Go百科php

Note how the header is being duplicated? I can't figure out what is going on. Any ideas?

FYI, this is loading and updating a mySQL db using ajax and json. Pretty cool I reckon.

(Once I sort this problem out I have another question about removing an event)

So you have only changed the folder name? Has there anything changed in index.php?