function open_player(video_file)
		{

		var movie_url = 
			"/common/video_player/video_player.php?sample_movie="
			+ video_file + "&player_layout=external";

		window.open(movie_url, "player_window",
		"width=855,height=580,scrollbars=no,menubar=no,location=no,status=no,toolbar=no"
		);
		}