For joomla1.0 add this code in index.php

<?php if ($option=="com_frontpage") : ?>
<object type="application/x-...........
</object>
<?php endif; ?>

For joomla1.5 add this code in index.php

<?php if (JRequest::getVar('view')=='frontpage') : ?>
<object type="application/x-s..................
</object>
<?php endif; ?>