document.write('

解析：

<!DOCTYPE html>

<html>

<head>

<title>Simple javascript Controller</title>

function playPause() {

var myVideo = document.getElementsByTagName(\'video\')[0];

if (myVideo.paused)

myVideo.play();

else

myVideo.pause();

}

function makeBig() {

var myVideo = document.getElementsByTagName(\'video\')[0];

myVideo.height = (myVideo.videoHeight * 2 ) ;

}

function makeNormal() {

var myVideo = document.getElementsByTagName(\'video\')[0];

myVideo.height = (myVideo.videoHeight) ;

}

</script>

</head>

<body>

<br>

<a href="javascript:playPause();">Play/Pause</a> <br>

<a href="javascript:makeBig();">2x Size</a> |

</div>

</body>

</html>

');