How to manage system volume using javascript

Question

I use a media player to play audio and video. I create my own button to increase and decrease the volume of the media player. works fine too.

Problem:

Even after the volume reaches 0%, it is audible. If the volume of the player increases, the volume of the system also increases. Is it possible. How to achieve this task.

Control:

<object id="mediaPlayer" classid="clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95"
    codebase="http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=5,1,52,701"
    height="1" standby="Loading Microsoft Windows Media Player components..."
    type="application/x-oleobject" width="1">
    <param name="fileName" value="" />
    <param name="animationatStart" value="true" />
    <param name="transparentatStart" value="true" />
    <param name="autoStart" value="true" />
    <param name="showControls" value="true" />
    <param name="volume" value="70"  />
</object>

the code:

function decAudio() {
    if (document.mediaPlayer.Volume >= -1000) {
        var newVolume = document.mediaPlayer.Volume - 100;
        if (newVolume >= -1000) {
            document.mediaPlayer.Volume = document.mediaPlayer.Volume - 100;
        } else {
            document.mediaPlayer.Volume = -1000;
        }
    } 
}

Answer 1

if sound is still audible as soon as document.mediaPlayer.Volumeset to 0, why don't you set document.mediaPlayer.Settings.mute = true?

, document.mediaPlayer.Settings.Volume document.mediaPlayer.Volume? , / , javascript ( jscript) mediaplayer.

" " , Windows Media Player 7 :

obj = document.getElementById("mediaPlayer");

• Code
  • Parameters
  • Description
• obj.Settings.autoStart
  • true
  • , , .
• obj.Settings.baseURL
  • -
  • URL-, URL script, .
• ClosedCaption.captioningID
  • 0
  • , .
• obj.Controls.currentMarker
  • 0
  • .
• obj.Controls.currentPosition
  • 0
  • .
• obj.Settings.defaultFrame
  • -
  • , URL-.
• obj.enableContextMenu
  • true
  • , , , .
• obj.enabled
  • false
  • , Windows Media.
• obj.fullScreen
  • false
  • , .
• obj.Settings.invokeURLs
  • true
  • , , URL- -.
• obj.Settings.mute
  • false
  • , .
• obj.Settings.PlayCount
  • 1
  • , . .
• obj.Settings.rate
  • 1.0
  • . 0,5 , 2 .
• obj.stretchToFit
  • false
  • , , , , .
• obj.uiMode
  • full
  • , . : , , , .
• obj.URL
  • -
  • . URL-.
• obj.Settings.volume
  • Zero , 100 .
• obj.Settings.balance
  • false
  • . 0 egual, -100 , 100 - .
• obj.windowlessVideo
  • false
  • , , Windows Media . windowlessVideo true, Player , . Windows Media Windows XP .

Answer 2

[: ]

, MediaPlayer, ? this

0 100? .

javascript-, ?