JQuery Accordian form with required fields (ASP.NET)

JQuery Accordian form with required fields (ASP.NET)

I'm baffled, hopefully somebody could help. We have an ASP.NET (VB) website and have a form that I've sectioned out into JQuery Accordian tabs, with a submit button at the bottom of the page. The only required fields are in the 1st accordian pane. When somebody is not in the 1st accordian pane and clicks submit, I would like the 1st pane to open if there are required field validation not filled out. Right now it just sits on the last pane opened.

How would I go about opening this 1st pane on submit?