Youtube Clip: Fullformat in Browser Window.

Is there a way to add a YouTube video to fit the browser window using the below method:

Say a YouTube Video URL is http://www.youtube.com/watch?v=vr3x_RRJdd4

To watch this clip in a resizable browser window without switching to Full Screen, just rewrite the above URL a http://www.youtube.com/v/vr3x_RRJdd4

via Smart Youtube | Prelovac.com.