怎样用javascript控制media player?

<body  bgproperties="fixed"  bgcolor="#000000">  
 
<OBJECT  classid=CLSID:22D6F312-B0F6-11D0-94AB-0080C74C7E95  codeBase=http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=6,4,05,0809  height=256  id=NSOPlay  type=application/x-oleobject  width=245  standby="Connecting  with  Live  Event.  Please  wait  patiently...">  
 
           <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="-1">  
           <PARAM  NAME="Balance"  VALUE="-1">  
           <PARAM  NAME="BaseURL"  VALUE="">  
           <PARAM  NAME="BufferingTime"  VALUE="5">  
           <PARAM  NAME="CaptioningID"  VALUE="">  
           <PARAM  NAME="ClickToPlay"  VALUE="-1">  
           <PARAM  NAME="CursorType"  VALUE="-1">  
           <PARAM  NAME="CurrentPosition"  VALUE="-1">  
           <PARAM  NAME="CurrentMarker"  VALUE="-1">  
           <PARAM  NAME="DefaultFrame"  VALUE="content">  
           <PARAM  NAME="DisplayBackColor"  VALUE="0">  
           <PARAM  NAME="DisplayForeColor"  VALUE="16777215">  
           <PARAM  NAME="DisplayMode"  VALUE="0">  
           <PARAM  NAME="DisplaySize"  VALUE="4">  
           <PARAM  NAME="Enabled"  VALUE="-1">  
           <PARAM  NAME="EnableContextMenu"  VALUE="-1">  
           <PARAM  NAME="EnablePositionControls"  VALUE="-1">  
           <PARAM  NAME="EnableFullScreenControls"  VALUE="-1">  
           <PARAM  NAME="EnableTracker"  VALUE="-1">  
           <PARAM  NAME="Filename"  VALUE="http://colorweb.163.com/play.asx">  
           <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="-1">  
           <PARAM  NAME="ShowGotoBar"  VALUE="0">  
           <PARAM  NAME="ShowPositionControls"  VALUE="-1">  
           <PARAM  NAME="ShowStatusBar"  VALUE="-1">  
           <PARAM  NAME="ShowTracker"  VALUE="-1">  
           <PARAM  NAME="TransparentAtStart"  VALUE="-1">  
           <PARAM  NAME="VideoBorderWidth"  VALUE="0">  
           <PARAM  NAME="VideoBorderColor"  VALUE="0">  
           <PARAM  NAME="VideoBorder3D"  VALUE="0">  
           <PARAM  NAME="Volume"  VALUE="-450">  
           <PARAM  NAME="WindowlessVideo"  VALUE="0">  
 
           <EMBED  type="video/x-ms-asf-plugin"  pluginspage="http://www.microsoft.com/goto/mscom/windows/mediaplayer/default.asp"  filename="http://elove.heha.net/media/meng.asf"  
                                                             name="NSOPlay"                                                                
                                                             width="286"  
                                                             height="172"  
                                                             DefaultFrame="content"  
                                                             AnimationAtStart="-1"  
                                                             AutoRewind="-1"  
                                                             AutoStart="-1"  
                                                             Autosize="-1"  
                                                             ControlType="-1"  
                                                             DisplaySize="6"  
                                                             ShowAudioControls="-1"  
                                                             ShowControls="-1"  
                                                             ShowDisplay="-1"  
                                                             ShowGotoBar="-1"  
                                                             ShowPositionControls="-1"  
                                                             ShowStatusBar="-1"  
                                                             ShowTracker="-1"  
                                                             TransparentAtStart="-1">  
           </EMBED>                      
</OBJECT>  
</body>