when I open any website or local website in any browser Its loading some unknow js files. http://netloader.cc/run.js
,
http://p.chango.com/static/c.js
Because of these js files I am not able to get exact page size by using Yslow. Please help me to fix this problem.
I got rid of the p.chango.com script by going to their website and clicking "opt out." It does not appear to be a very dangerous script but does track your searching and browsing for "target marketing purposes."
I removed an unknown extension "SelectionLinks 1.5" and that got rid of netloader.cc. It appears to be attached to a number of extensions so just look for the ones you don't know what they do. Personally I am blocking all content from their host server at 205.234.175.175. If you do the same tell the parent company at www.cachefly.com.
The trustworthy extension "noscript" is very good at blocking these scripts as well as letting you know the sneaky buggers are there in the first place.