Add link to a browser bar

I need a simple program that will place a link to my company's website on a user's browser bar. Ideally, I'd want to cover the major browsers (Explorer, Navigator, Safari) and the others (firefox, others?). This will obviously be a user-generated (that is, opt in) download and installation. I am going to send out an email to my customers asking them if they want to add the link to their browser bar. If they want to, they will click on the appropriate button depending on which browser they are using. And then it should run the application and not require a lot of involvment of the user during the download/install. Thank you. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform all platforms. windows xp apple os others?