Send param value from HTML to Flash scripting

Hi, Experts:

I have a scripting code that looks like this:

     function startMovie_pre() {
      mcl_pre.loadClip(getURL(_root.movielink+"instance_mc_0.swf", "_blank"),imageLoader_pre);
     }
     startMovie_pre();

and a HTML code like this:

<script language="javascript">
      if (AC_FL_RunContent == 0) {
            alert("This page requires AC_RunActiveContent.js.");
      } else {
            AC_FL_RunContent(
                  'codebase', 'http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0',
                  'width', '851',
                  'height', '491',
                  'src', 'newfront_slide_v00',
                  'quality', 'high',
                  'pluginspage', 'http://www.macromedia.com/go/getflashplayer',
                  'align', 'middle',
                  'play', 'true',
                  'loop', 'true',
                  'scale', 'showall',
                  'wmode', 'transparent',
                  'devicefont', 'false',
                  'id', 'newfront_slide_v00',
                  'bgcolor', '#ffffff',
                  'name', 'newfront_slide_v00',
                  'menu', 'true',
                  'allowFullScreen', 'false',
                  'allowScriptAccess','sameDomain',
                  'movie', 'newfront_slide_v00',
                  'salign', ''
                  ); //end AC code
      }
</script>
<noscript>
      <object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0" width="851" height="491" id="newfront_slide_v00" align="middle">
      <param name="allowScriptAccess" value="sameDomain" />
      <param name="allowFullScreen" value="false" />
    <!--Add-->
    <param name="flashvars" value="movielink=/catalog/hp/swf/" />
    <!--End Add-->
      <param name="movie" value="newfront_slide_v00.swf?clickTAG=/signup/" />
    <param name="quality" value="high" /><param name="wmode" value="transparent" />
    <param name="bgcolor" value="#ffffff" />
    <embed src="newfront_slide_v00.swf" flashvars="movielink=/catalog/hp/swf/" quality="high" wmode="transparent" bgcolor="#ffffff" width="851" height="491" name="newfront_slide_v00" align="middle" allowScriptAccess="sameDomain" allowFullScreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" />
      </object>
</noscript>

So, I add movielink to send /catalog/hp/swf/ to flash scripting.... but it is not working. I got error "undefinedinstance_mc_0.swf"

Need help!!!!

Thanks

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