Note in GoogleReader ToolBar Button for Firefox

Install the Firefox extension:
https://addons.mozilla.org/en-us/firefox/addon/custom-buttons/
Alternative:
https://addons.mozilla.org/en-US/firefox/addon/custom-buttons²

To add new button you should:
* Go into menu View -> Add new Button....
OR
* Toolbar -> right click -> Add new Button....

Name:	Note in Reader
Icon:	http://www.google.com/reader/ui/favicon.ico
Code:	loadURI("javascript:var b=document.body;var GR________bookmarklet_domain='http://www.google.de';if(b&&!document.xmlVersion){void(z=document.createElement('script'));void(z.src='http://www.google.de/reader/ui/link-bookmarklet.js');void(b.appendChild(z));}else{}");

Update:
Posted in CustomButtons² Database:
http://custombuttons2.com/en/node/1177
Add it directly