Lesson Builder uses jquery. When I use it in the PDA portal none of my jquery stuff is defined. It appears that the PDA portal inserts a load of jquery at the very end of the HEAD area. I believe this undefines anything I've set up that uses jquery. I can fix it by moving my script loads into the body, but I think this is an undesirable change. I'm not sure what to advise, but you don't want to break applications that use jquery themselves.