Mutliple Incudes of Jquery?
This can cause things to inexplicably fail – view page source and make sure you don’t have multiple …/jquery … .js files
To test if Jquery is present or not use something like this, and call it if not present
http://css-tricks.com/snippets/jquery/load-jquery-only-if-not-present/
Feel free to comment if you can add help to this page or point out issues and solutions you have found. I do not provide support on this site, if you need help with a problem head over to stack overflow.