Some guy tried to run this on my site. I'll keep his IP private because whatever.

The js: http://d3lvr7yuk4uaui.cloudfront.net/items/loaders/loader_1111.js
I'm not actually sure what it does, if anyone could shed some light I'd appreciate it.

Anyways here it is mirrored:
http://pastie.org/pastes/3169315/text

And here it is beautified:
http://pastie.org/pastes/3169316/text?key=r4cxppq3iihwcklsfuhsw

Same here.I've been getting multiple such entries in logs. So far, I have no luck figuring out what its trying to do.

Here is the javascript that initiates it all : http://pastie.org/pastes/3224218/text

Here is the final JS :

http://d3lvr7yuk4uaui.cloudfront.net/items/loaders/loader_1063.js?aoi=1311798366&pid=1063&zoneid=14729&cid=&rid=&ccid=&ip=

Any help is appreciated.

Looks like advertising malware. Dunno. Probably XSS injected.