How to get keydown and keyup events on Kindle Fire HD with jQuery

How to get keydown and keyup events on Kindle Fire HD with jQuery

I can only get the keydown event to fire on a new Kindle Fire HD tablet for the delete and enter keys.

I am using the built-in Silk browser. I can see that on Google, the keydown event is being fired. How did they get it to work?

If I go to a keyboard testing website like http://unixpapa.com/js/testkey.html in the Silk browser, then it does not fire either. Anybody have a workaround for this?

$("#simpleSearch_input").keydown(function(evt) { alert("keydown"); });