chrome ad-blocking extension

We are looking for a developer to build and test a Chrome extension that replaces ads with art, as part of a Buy Nothing Day campaign. To successfully deploy it for the campaign we need the extension completed by November 18th. Rather than building from scratch, our suggestion is that the extension would use the AdBlockPlus Chrome extension as a code base to minimise the amount of work required. Key ways in which the AdBlockPlus extension would need to be changed would be; - placing supplied images (artworks) into the spaces left by the removal of ads - only replacing ads on specific dates (Buy Nothing Day) - optional removal of some of the more complex aspects of AdBlockPlus (such as optional settings etc.) [login to view URL] PLEASE SEND LINKS TO RELATED WORK YOU HAVE DONE related to browser extension. Project Questions 1. What experience do you have building browser extensions or similar applications?