More than one plugin

More than one plugin

I'm new to jQuery and I'm really lost on how to implement multiple jQuery plugins/functions* on a page. Take this page, for instance. I'm using jQuery to generate the "What's On Media Spy" slideshow at the moment. I'm now trying to add a new jQuery plugin called Meerkat, which generates one of those fixed bars at the bottom of the page.

I've included all the required files and code. However, no matter what I do, the Meerkat plugin simply refuses to work. The problem is mine, by the way - I've tried implementing other jQuery plugins, and I can't work out how to add them either. My guess is that it has something to do with the stuff between lines 98 and 111, but I haven't the foggiest how to implement it properly. I've attempted to read explanations that seem to relate to "multiple plugins" or "multiple functions" on one page, but my eyes glaze over when I try to understand what they're saying.

* If someone could explain to me the exact difference between a jQuery plugin and a function, that'd also be helpful!