Greasemonkey
Don’t you hate when you visit a site and just wish you could change a few things about it? Or how about when one of your favourite websites changes the way it looks & feels… for the worse?
For these occasions, you can make the changes to your favourite websites using a Firefox extension called Greasemonkey.
A friend of mine told me to try this after I complained to him that a favourite website of mine had changed the way certain things work. So I installed this and got to work, looking at the source code of the website, and inserting a bit of javascript to modify the way it worked, and wala! Customized to my preference!
This Firefox extension is extremely powerful in a set of skilled hands, but if your knowledge of javascript and html is subpar, there is a library of pre-made scripts that allow you to enhance the majority of popular websites out there. The site is called Userscripts.org. Enjoy!

