Attempting to open a certain option on a css / jquery menu during page load

Attempting to open a certain option on a css / jquery menu during page load

Hello,

I am trying to get Sub Category 1 to open on page load in a CSS Jquery driven vertical menu but have been failing to do so over 4 hours.

Would an expert be so kind to please assist?

http://jsfiddle.net/mttw5y9q/

Thanks in advance and kind regards

- M