Chrome and Firefox Browser Extension

You are going to develop a firefox and chrome extensions for our site. The extension will do the following things: 1) Check for updates if there is a new version of our extension, and if there is one, it should update automatically or according to the chrome and firefox procedure. 2) Have a search box, and 4 button icons with links (in the settings the user can enter his username on our site to customize these links. 3) The toolbar should catch all dns errors and redirect to a search on our site, for example if they entered [login to view URL] that dns error should redirect to our site's search. 4) When the user searches on google, you will display search results of our site on the top right part of Google (like the evernote extension) You will create both a Google and a Firefox extension., When the firefox extension is installed you should include the searchstatus extension too, both in one package. We can provide the graphics for the buttons.