windowsmediaplay中控制从wmv的指定时间开始播放，指定时间停止播放1、Mediaplay播放器插入方法
插入-媒体-ActiveX
属性设置：
ClassID：CLSID:6BF52A52-394A-11d3-B153-00C04F79FAA6
参数：
URL：文件路径名称
PlayCount ：整数
AutoStart ：自动播放：1 不播放：0
fullScreen ：是否自动全屏 0不1是
volume ：0-100
代码
1.window.media.player
<object classid=clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95 id=MediaPlayer1 width=286 height=225>
<param name=AudioStream value=-1>
<param name=AutoSize value=-1>
<param name=AutoStart value=-1>
<param name=AnimationAtStart value=-1>
<param name=AllowScan value=-1>
<param name=AllowChangeDisplaySize value=-1>
<param name=AutoRewind value=0>
<param name=Balance value=0>
<param name=BaseURL value>
<param name=BufferingTime value=5>
<param name=CaptioningID value>
<param name=ClickToPlay value=-1>
<param name=CursorType value=0>
<param name=CurrentPosition value=-1>
<param name=CurrentMarker value=0>
<param name=DefaultFrame value>
<param name=DisplayBackColor value=0>
<param name=DisplayForeColor value=16777215>
<param name=DisplayMode value=0>
<param name=DisplaySize value=0>
<param name=Enabled value=-1>
<param name=EnableContextMenu value=-1>
<param name=EnablePositionControls value=-1>
<param name=EnableFullScreenControls value=0>
<param name=EnableTracker value=-1>
<param name=Filename value=你的多媒体文件名>
<param name=InvokeURLs value=-1>
<param name=Language value=-1>
<param name=Mute value=0>
<param name=PlayCount value=1>
<param name=PreviewMode value=0>
<param name=Rate value=1>
<param name=SAMILang value>
<param name=SAMIStyle value>
<param name=SAMIFileName value>
<param name=SelectionStart value=-1>
<param name=SelectionEnd value=-1>
<param name=SendOpenStateChangeEvents value=-1>
<param name=SendWarningEvents value=-1>
<param name=SendErrorEvents value=-1>
<param name=SendKeyboardEvents value=0>
<param name=SendMouseClickEvents value=0>
<param name=SendMouseMoveEvents value=0>
<param name=SendPlayStateChangeEvents value=-1>
<param name=ShowCaptioning value=0>
<param name=ShowControls value=-1>
<param name=ShowAudioControls value=-1>
<param name=ShowDisplay value=0>
<param name=ShowGotoBar value=0>
<param name=ShowPositionControls value=-1>
<param name=ShowStatusBar value=0>
<param name=ShowTracker value=-1>
<param name=TransparentAtStart value=0>
<param name=VideoBorderWidth value=0>
<param name=VideoBorderColor value=0>
<param name=VideoBorder3D value=0>
<param name=Volume value=-320>
<param name=WindowlessVideo value=0>
</object>
里面的SelectionStart SelectionEnd是如何用的，可否控制wmv从一个指定的帧开始，到一个指定的帧结束。
请高手作答，谢谢
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<param name=CurrentPosition value=200>
这里设置为视频开始播放的时间
页面onload=SetPause()
function SetPause(){
setTimeout(pause(),1000);
}
function pause(){
var current_time = document.getElementById(mediaplayer1).controls.currentPosition;
if (current_time>parseInt('1261.230')){
toPlay();
}else{
setTimeout(pause(),1000);
}
}