Some update for version 2.7
Edit layout.phtml:
1) add 1 line into the head-tag before
"<?php
if ($sharing):"
<script type="text/javascript" src="<?php echo IV_PATH; ?>assets/js/swfaddress.js"></script>
2) insert
<div id="imagevue"><div id="na">
before
<div id="body" <?php if ($brCrumbs->count()>1): ?>class="inner"<?php endif; ?>>
3) insert before "</body>" tag
</div>
</div>
<script type="text/javascript">
//<![CDATA[
var flashVars = {
foreground_color: 'EEEEEE',
background_color: '222222'
};
swfobject.embedSWF("http://yourdomain/iv-includes/imagevue2.swf", "imagevue", "100%", "100%", "8.0.0", "http://yourdomain/iv-includes/expressInstall.swf", flashVars, {allowScriptAccess: 'always', allowFullScreen: true, bgcolor: '#222222', wmode:"transparent"}, {id: 'imagevue', name: 'imagevue'});
// ]]>
</script>
So, if the visitor's computer able to view FLASH, the flash version will load, and if the flash player is not installed, visitor will see our basic html page. Note, that in case of FLASH version the main page will be loaded.