How to view youtube video from blackberry javelin?

I've visited youtube and try yto open a video, I click the view this video icon and it doesn't show anything.do u know how to open a video with BB javelin? And when I tried to download like converter program the link say thw program can't be displayed. I don't really want to download video, I justw want to watch a video through this phone. 10 pt. For best answer...