Dev Greasemonkey
Get flash to fully experience Pearltrees
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Greasemonkey is a Firefox extension that gives you tremendous control over how a page appears in your browser.
Get Started With Greasemonkey
With this blog entry I am continuing the theme of demonstrating tools to help you build mashups. In this case, I will show how a tool called Greasemonkey can be a powerful approach for building browser side mashups.
More Mashups: Using Greasemonkey to Weave New Features into Web Sites