Javascript to clean URL's

Javascript noob here. I'm making a greasemonkey to clean URL's:
http://pastebin.com/XAbJMenZ

Cleaning up the main page url works, but cleaning links on the page doesn't. What am I doing wrong? (apart from probably everything).

you tryin' to tell me you don't know what's wrong?

nigga, you got like 50 else if's in there.  clean that shit up.

throw it on a jsfiddle and I'll help