WmvPlayer.controls.markerCount 的值是undefined

function IndexClick(Index) {                          var WmvPlayer = parent.PlayerDisplay.document.getElementById("MediaPlayer");                          WmvPlayer.controls.currentMarker = Index;                          alert(WmvPlayer.controls.currentMarker)                          alert(WmvPlayer.controls.markerCount)                          if (WmvPlayer.playState != "Playing") WmvPlayer.controls.play();                          VisitJyorFy(m_MarkerTimes[Index - 1]);                      }

  index==2
WmvPlayer.controls.currentMarker  的值 是0
WmvPlayer.controls.markerCount 的值是undefined
  不知道  currentMarker   这个是怎么用的

原来是在视频了设置的