If you use BrowserPlus to enhance your web page, but do not require it, you can call a method in the Installer that renders an upsell link. When the user presses the upsell link, the Installer dialog will pop up the user will be guided through the installation process.
Note: If you don't see the upsell link, then BrowserPlus is already installed.
Turn on your sound / Turn off your tunes. Once installed, BrowserPlus is going to speak to you.
If it's going to show, the upsell link is displayed below this paragraph.
See it above? Nope, then BrowserPlus is already installed.