→提问：CCTV里的全屏功能是怎么实现的，谢！

→参考：www.cctv.com.cn/tvonline/main_media.html

→回答：老版本的media player 中，classid=CLSID:22D6F312-B0F6-11D0-94AB-0080C74C7E95新版的：classid="clsid:6BF52A52-394A-11D3-B153-00C04F79FAA6"
新版做这样的判断：
if (player.playState==3){
player.fullscreen=1;>
}

→DEMO：

<script language=javascript defer>
var volv=phx.settings.volume;
setInterval("if(phx.playState==3){time.innerText=phx.controls.currentPositionString+'|'+
phx.currentMedia.durationString}",1000);
setInterval("if(phx.playState==3){itcn.style.width=parseInt(245*(phx.controls.currentPosition/phx.currentMedia.duration))}",1000);
function volup(){
if (volv<100){
volv+=5;
phx.settings.volume=volv;
time.innerText=volv;}
else{time.innerText='最大';}
}
function voldown(){
if (volv>0){
volv-=5;
phx.settings.volume=volv;
time.innerText=volv;}
else{time.innerText='最小';}
}
</script>
<p>
  <object classid="clsid:6BF52A52-394A-11D3-B153-00C04F79FAA6" id="phx" width="245" height="240">
    <param name="URL" value="http://www.wfzx.net/wf-phx/music/she_superstar.wmv">
    <param name="rate" value="1">
    <param name="balance" value="0">
    <param name="currentPosition" value="0">
    <param name="defaultFrame" value>
    <param name="playCount" value="1">
    <param name="autoStart" value="-1">
    <param name="currentMarker" value="0">
    <param name="invokeURLs" value="-1">
    <param name="baseURL" value>
    <param name="volume" value="50">
    <param name="mute" value="0">
    <param name="uiMode" value="full">
    <param name="stretchToFit" value="0">
    <param name="windowlessVideo" value="0">
    <param name="enabled" value="-1">
    <param name="enableContextMenu" value="-1">
    <param name="fullScreen" value="0">
    <param name="SAMIStyle" value>
    <param name="SAMILang" value>
    <param name="SAMIFilename" value>
    <param name="captioningID" value>
    <param name="enableErrorDialogs" value="0">
    <param name="_cx" value="6482">
    <param name="_cy" value="6350">
  </object>
</p>
<input type=button value=mute onclick=phx.settings.mute=phx.settings.mute==true?false:true;time.innerText=phx.settings.mute==true?'静音':'关闭静音';>
<input type=button value=play onclick=phx.controls.play();time.innerText='播放';>
<input type=button value=pause onclick=phx.controls.pause();time.innerText='暂停';>
<input type=button value=stop onclick=phx.controls.stop();time.innerText='停止';>
<input type=button value=mode onclick=phx.settings.balance=phx.settings.balance=='100'?'-100':'100';time.innerText=phx.settings.balance=='100'?'右声道':'左声道';>
<input type=button value=vol++ onclick=volup();>
<input type=button value=vol-- onclick=voldown();>
<input type=button value=fullscreen onclick="if(phx.playState==3)phx.fullscreen=1;">
<br>
<div id="time" style="background:#f2f3f7;width:245">正在加载媒体。。。</div>
<table id=bar style="width:245;height:10px;border:1px black solid;">
  <tr>
    <td id=itcn bgcolor=#f70968 style="width:0"></td>
    <td id=bar2 style="width:245"></td>
  </tr>
</table>