Did you check the "Console Logs" of your website?
I am seeing 2 javaScript conflict error.
TypeError: $win.on is not a function
...if(s==undefined)s=1.70158;return c*((t=t/d-1)*t*((s+1)*t+s)+1)+b},easeInOutBack:...
widgetk...959c.js (line 3)
TypeError: b(...).on is not a function
...preventDefault();var a=b(this);a.data("alert")||(a.data("alert",new e(a,g.Utils....
uikit.js (line 8)
Read this topic:
www.flexiblewebdesign.com/forum-virtuemart-2-template-support/1820-solved-yootheme-conflict-typeerror-d-on-is-not-a-function
You are having exactly the same problem as the above topic.
Most of the YooTheme templates are not compatible with Virtuemart Component (out of the box) because YooTheme templates require minimum jQuery1.7.2, but Virtuemart Component loads jQuery1.6.4
Regards,
Support