You do have JavaScript conflicts. eg on the product details page IE debugger throws up these:
Line: 43
Error: Object doesn't support property or method 'setStyle'
Line: 99
Error: Object doesn't support property or method 'fancybox'
Line: 29
Error: Object doesn't support property or method 'addEvent'
Line: 62
Error: Unable to get property 'showActivity' of undefined or null reference
You are loading
four different versions of jQuery!
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js" type="text/javascript"></script>
<script src="/plugins/system/slprettyphoto/slprettyphoto/js/jquery-1.8.2.min.js" type="text/javascript"></script>
<script src="
http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript" src="/templates/siteground-j16-22/js/jquery-1.4.4.min.js"></script>
And also two no conflict scripts:
<script src="/components/com_virtuemart/assets/js/jquery.noConflict.js" type="text/javascript"></script>
<script src="
http://therealgamersnetwork.net/modules/mod_shoutbox/assets/js/jquery-conflict.js" type="text/javascript"></script>
You need the first loaded jQ as this must precede the other VM scripts - but those others is just over the top!
You could try this, but not sure if it will work with this amount of jQ -
http://forum.virtuemart.net/index.php?topic=111843.0