jQueryUI Tabs Image not showing up

[rtonerii]

I am wrapping slippry with jQueryUI Tabs.
The issue I am having is, if the tab is active, when I load the page, the slider works just fine.

If the tab is not an active tab, the slider shows up but no images show up, sometimes I can click on the next one and the next images show up.

I attached a screenshot.

Any idea?