Edit any website / webpage with simple JavaScript

Copy the following one line JavaScript into address bar of browser to enable ‘edit mode’.
javascript:document.body.contentEditable='true'; document.designMode='on'; void 0

Now you can add or delete any text, move images and objects, and more. Have a fun!

Tested on Internet Explorer 8 and 6, Firefox 3.5.2, Opera 10, Google Chrome and Apple Safari 4.0.3.