Platypus
http://platypus.mozdev.org/
Platypus is a Firefox extension which lets you modify a Web page from your browser -- "What You See Is What You Get" -- and then save those changes as a Greasemonkey script so that they'll be repeated the next time you visit the page. Editing pages to suit your needs is dandy -- but making those changes "permanent" is the real payoff.
Some of the things you can do with Platypus include:
* Remove parts of the page you don't wish to see.
* Move a part of the page to a different location.
* Change the style and format of page elements.
* Modify all the links on the page using a regular expression.
* Insert your own HTML code.
Odlicna alatka za gazenje delova web stranice.
help:
http://platypus.mozdev.org/help.html