How can I use two jQuery plugins in one document?

How can I use two jQuery plugins in one document?

I troubleshooted for a while and discovered that it was simply the attachment of the edgePreload.js file that kept it from working... how do I fix this? I also found out that I (Or more accurately, the plugins) are calling on 2 jQuery libraries, but I'm not quite sure how to get them both to use just one library.

I have uploaded 2 pages to show what I'm talking about:

http://www.ruesterprod.com/edgeTest_a/ - my quicksand plugin works fine here (Click the 2 grey buttons to see what the Quicksand plugin is doing) I commented out only the part where edgePreload.js is attached...

http://www.ruesterprod.com/edgeTest_b/
 - This one I left the edgePreload.js script attached and now the 2 grey buttons don't do anything...

Please help!

Thanks all!