Trouble wirth Tabs (WP UI plugin)

Was wondering if anyone here has encountered the same little issue as I have with this plugin and could help me out:

When I use SLPlus by putting the shortcode in a tab created by WP UI,
It works perfectly if it on the frist tab that loads, with or without ‘force load javascript’ ticked.
This can be seen on this page:
http://www.aquasound.nl/as2013/en/kopen/webshop/

But if its on a later tab it only functions when I have ‘force load javascript’ enabled. And even then it initially does not show the complete map, but only a small square in the upper left corner.
This can be seen here in the tab ‘find dealers’:
http://www.aquasound.nl/as2013/en/kopen/

Any clue what I am doing wrong? I would prefer to be able to run the plugin without the javascript force, but if its needed, the so be it.

Thanks in advance for any help that you might be able to provide.

http://wordpress.org/extend/plugins/store-locator-le/