Chrome on Debian user here, that link actually provided a link to a moonlight installer for chrome (crx file), however chrome no longer allows downloaded extensions to be installed.
Just tried firefox (called Iceweasel in Debian), and moonlight installed ok, but I got this message:
// Due to differences between Silverlight and Moonlight, the Linux version of the
// Try F# control is not fully functional at this time.
//
// We will make the Try F# control available on this page as soon as all issues
// are resolved. Please check back later and thank you for your understanding.
//
