wmv in html page does not allow scanning the timeline

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I have wmv8 video files embeded in html pages. The video plays with no
problems, but it does not allow the user to scan the video's time
line. In mozilla the scan controlles are grayed out, and in IE the
scanning control has no effect.

A user has no choice but to watch the whole video from begining to
end. The option to move around in the movie time line is disabled. I
tried different settings and it still doesn't work. I even tried it on
a different computer and the problem is still there.

The video file are made with adobe premier pro, wmv version 8 and 9,
video file setting: variable rate constrained and I even tried it once
with constant rate.

Please help.

Here is the code I used:

<object id="video" classid="CLSID:05589FA1-C356-11CE-BF01-00AA0055595A"
border="0" height="236" width="320">
          <param name="ShowDisplay" value="0">
          <param name="ShowControls" value="1">
          <param name="AutoStart" value="1">
          <param name="AutoRewind" value="0">
          <param name="PlayCount" value="0">
          <param name="Appearance value=" 0="">
          <param name="BorderStyle value=" 0="">
          <param name="MovieWindowHeight" value="300">
          <param name="MovieWindowWidth" value="320">
          <param name="FileName"
value="http://mywebaddress.com/somefile.wmv ">
<embed src="http://mywebaddress.com/somefile.wmv "
type="application/x-mplayer2" loop="true" autostart="true"
controls="true" height="300" width="320"></embed>

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