google-maps-v3-shortcode Balloon not rendering missing corners

Hi there,

Great plugin but i`m having a couple of issues with the balloon not rendering properly on top right and bottom right,

I think it maybe either a css issue or javascript problem,

Here is the Dev site for you to view,

Click here for site

Any help with this would be greatly appreciated,

Regards,

http://wordpress.org/extend/plugins/google-maps-v3-shortcode/