Game on with Firefox Addon
Firefox addon, it was pretty hard for me at the time when interviewer was given a choice for me either to take a session on 960gs or build a simple firefox addon. I have to go on with 960gs since i am familiar with css and i did it and got selected.
Then the game starts , i was asked to work on with firefox add-on and now there is no choice . It was not as big task because there are lot of supports online i fond easy to learn and work on it . Here is that tutorial