function toggle(vidId) {

	var e = document.getElementById("videoWrapper");
	e.style.display = "none";

        toggleS(vidId);
}

function toggleS(vidId) {

	var e;
	var a;

        for(i=0; i < 5; i++) {

          e = document.getElementById("videoWrapper"+i);
	  a = document.getElementById("videoButton"+i);

	  if (i == parseInt(vidId) ) {
	        e.style.display = "block";
		a.className = "vidButtonOn";
	  } else {
	        e.style.display = "none";
		a.className = "vidButton";
	  }
        }
}

function toggleEx(vidId,playerId) {

	toggle(vidId);
	jwplayer(playerId).play();
}

function toggleSEx(vidId) {

	toggleS(vidId);
	jwplayer("robertPengIntro"+vidId).play();
}

function toggleSmallVideo(vidId) {
	
	var e = document.getElementById("smallVideoFrame"+vidId);
	e.style.display = "none";

	e = document.getElementById("smallVideoWrapper"+vidId);
	e.style.display = "block";

	jwplayer("robertPengSmallPlayer"+vidId).play();
}