Detect via javascript whether Silverlight is installed

Question

Is there a javascript function I can use to detect whether a specific silverlight version is installed in the current browser?

I'm particularly interested in the Silverlight 2 Beta 2 version. I don't want to use the default method of having an image behind the silverlight control which is just shown if the Silverlight plugin doesn't load.

Edit: From link provided in accepted answer:

Include Silverlight.js (from Silverlight SDK)

Silverlight.isInstalled("2.0");

Answer 1

Include Silverlight.js (from Silverlight SDK)

Silverlight.isInstalled("4.0")

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Resource:

http://msdn.microsoft.com/en-us/library/cc265155(vs.95).aspx

Answer 2

Please actually use the latest script available at http://code.msdn.microsoft.com/silverlightjs for the latest updates. This has several fixes in it.