Firefox media/download extension

Dear friends, we are looking for an coder, who will build for us small and flexible firefox extension. Extension must have: Menu bar under address bar of firefox, Fixed download icon on tollbar (fixed), Auto update function, Menu bar In menu bar, extension must have search box (integrated with our website), Fixed buttons with active links, such as News, Music, Videos (links goes to our website), Auto detect visitor GEO, and show weather forecast, Download Button and Function Download button must work with HTML5 players; Download button must automatically add under videos, and let users to download video with 1 click (like under youtube video), Download button under videos, must support different quality (menu where user choose which quality he want to download, if video support few qualities), If user clicking Download (choosen quality or default download), link of download must be given to our website like this: [login to view URL], and we will organize download process, Auto update Extension must check latest version in our server, and if we update/upgrade version of extension, he must update/upgrade current version automatically after browser restart. Backend, Also extension must collect and save info, after installation (info should be collect and posted in php file in correct tables.): - GEO, IP, Browser version, OS version, online status.