Development of browser extension

We need development of extension for Firefox and Chrome. Requirements of the extension for Firefox and Chrome are listed below and you need to complete all of the following requirements: 1. Button on the browser: The extension can add a button on the browser and the button show tips when the user's mouse is over the button. When users click the button, and then open our website. 2. Install extension using inno setup: We use the inno setup to install the extensions which is bundled with our Windows program. Our Windows installer will install the extensions into Firefox and Chrome, so please provide the script snippet of the inno setup to install the extensions into the browser. 3. Set homepage: Let users to decide if set homepage of Firefox and Chrome as our website when installing. When installing the extensions and our Windows programs, there should be an install page which has a checked box by default to show "Set our website as your homepage". When the check box is checked after installing, then the extension and the installer set our URL as the homepage of the Firefox and Chrome. When users uncheck the check box, then the extensions are only installed to the browser not setting the homepage. 4. Automatic updates of the extension: The extension for Firefox and Chrome check if there is new update every 7 days. If there are new updates of the extension, then the extension can update itself. 5. The extension should be stable and compatible with Firefox 3.6 and later version. (i.e. Firefox 13.0 and 14.0), latest version of Chrome. Please inform us your development tools. You must provide us all source codes with documents (how to build the source codes), the built extension (i.e. .xpi .crx), and the scripts of the inno setup to install the extension into Firefox and Chrome including setting homepage of Firefox and Chrome. Please provide us your related project so that I can check if you can do the job. If you have any questions about our requirements, please notify us.