None of these will work.
DravenX's link compiles a non-standard variation of Javascript called JScript.NET (basically a Javascript flavour of C#). I assume there is no browser engine so it is not possible to draw anything to the screen or play any audio without using the proprietary .NET extensions.
droptank21's looks like yet another wrapper around the IE control, which means you need IE9+, which means no support on XP and no support for the ~85% of Windows users who don't have IE9 yet.
And so on... basically you need a full browser engine, not just a javascript engine. Even a HTML layout engine like WebKit (that Adobe Air uses) isn't enough, because it only has an incredibly slow software renderer. I've looked far and wide and the only thing which looks like it will work so far is Awesomium. They should be finally releasing the version we need in a few months, so hopefully it won't be long then we can make an Awesomium-based wrapper.