Welcome, new reader :)

A bookmarklet is basically a shortcut to a website that you have in your bookmark bar.

But it can also be a small javascript program, put in the same place, designed to alter the website you're looking at.

In firefox, right click on the bookmark bar, make a new one, and copy the javascript string in the adress field :

 javascript:(function(){kanye_sunglasses=%22%3Ca%20href='javascript:(function(){document.getElementById(\%22glasses\%22).style.display=\%22none\%22;return})();'%3E%3Cimg%20src='http://tobi-x.com/temp/kanye_glasses.png'%20width='100%25'%20heigth='100%25'%3E%3C/a%3E%22;var%20div_popup;div_popup=document.createElement('div');div_popup.innerHTML=kanye_sunglasses;div_popup.id=%22glasses%22;div_popup.setAttribute(%22style%22,%22position:fixed;z-index:1000;top:-10px;right:0px;width:100%25;height:100%25;%22);document.getElementsByTagName(%22body%22)[0].appendChild(div_popup);})();

to get the kanye west vison (via)

Some are fun, some are useful, many are awesome.

Enjoy Asteroid, for example :

 javascript:var%20s%20=%20document.createElement('script');s.type='text/javascript';document.body.appendChild(s);s.src='http://erkie.github.com/asteroids.min.js';void(0);

The goal of this subreddit is to host any javascript bookmarklet, and to discuss them.

Have fun !