Create Browser toolbar (Firefox)

The need is for a browser toolbar. A user will download a file and install it in his browser (example [login to view URL]) The toolbar will have the next fields. 1 - SmallLogo 2 - Search box 3 - A button that will open url in a popup window 4 - 3 smileys (we will supply) ** changing the toolbar will be done from one place (file..etc) File should give ============= File should have 3 parameters <SearchURL> [login to view URL]</SearchURL> <PopupURL>[login to view URL]</from> <SimilesURL>[login to view URL]</PopupURL> Note ==== - The toolbar should work on Firefox - Do not use toolbar services (like conduit), we need it to be written. - It will set the browser search default to a link i provide search (<SearchURL>). - You are allowed to use open source - An installation document is needed with technical details - Sources will be supplied to us at the end of the work. Please indicate in your answer if you are going to use open source?