jQuery plugin Zoomer

Hey guys,

Im trying to embed a jQuery plugin called Zoomer at my website. Here is all code explained and I have included it into my site without any significant modifications (just the ones related to styling and animation speed) http://addyosmani.com/blog/zoomer-gallery-a-jquery-plugin-for-displaying-images-with-flash-like-zooming-effects/

When i tried it on front-end version of the website, it worked brilliantly, didn’t notice any problems. But as soon as I put it in my wordpress theme, it stopped working. All the file paths are correct and jQuery is running. Problem seems to be with the Zoomer.js file or code itself. When inspected it with firebug console, it gave an error message saying that .Zoomer is not a function.

I don’t understand why is it giving such error now, but when tested on front end there was no errors. Does anyone have any idea?