How: Place link on web page to launch PocketCloud from javascript

How: Place link on web page to launch PocketCloud from javascript

I want to place a link on a web page to launch PocketCloud if the user uses iPad. I know how to check for iPad (navigator.userAgent.indexOf("iPad")), but I don't know which javacript to use to launch the app.

PocketCloud has been installed on the iPad the will browse to this web page.