[CS4] HELP! fscommand not executing javascript function - AS2

Hi all,

I’d be really grateful for some assistance. I really don’t have much of a clue what I’m doing here. I know some Flash basics but am really struggling with this. Have spent the last few days searching everywhere I can think of for a solution, but nothing I try is working. Am pretty sure the problem is me!!!

Here’s the trouble:
I have an swf being played from an html page using the Javascript Shadowbox plugin. This is executed as soon as the window loads - creating a splashpage for the site. I am trying to get the swf to run the function Shadowbox.close(); as soon as the movie has finished playing without clicking the mouse or “doing” anything. I was previously using a timeout function on the html page to close the Shadowbox after a spcific length of time - but this does not allow for the time it takes for each users browser to download the swf.
I decided it made more sense to use fscommand to execute the function I am after but I think my code must be screwed up because it will not work at all.

Here’s my page code:

<script type="text/javascript">
        skipSetup:         true,
        modal:            true,
        overlayColor:    "#000000",
        overlayOpacity:    1,
        showMovieControls:    false,
        viewportPadding:    0,
        flashVersion:    "10.0.0",
        onClose:    function(){$.fn.generalAnimation();}
window.onload = function() {
        content:        '<object width="500" height="367" id="intromovie"><param name="intromovie" value="video/intromovie.swf"><embed src="video/intromovie.swf" width="500" height="367" menu="true" quality="best" play="false" name="intromovie" id="intromovie" type="application/x-shockwave-flash"></embed></object>',
        player:         "html",
        width:            505,
        height:            375,
        modal:            true,
<script type="text/javascript">
function intromovie_DoFScommand(command, args) {
  if (command == "intromovie")

And here’s my action script:

onClipEvent (load) {

The action script is attached to a single frame movie clip that is placed on the last frame of my swf.

I would be so grateful for help with this as am rapidly losing all patience!
Many thanks in advance.