Opera jQuery drop down bug

Question

So I designed / coded these drop down menus for this website. It works perfectly in Safari, Firefox, ie7, and ie8, but in Opera, it is extremely buggy. Check it out (in opera):

http://newenglandforestrally.com/

Is this an opera bug with how Opera handles jQuery (and therefore blame it on the browser and not worry about it), or should I be testing and resolving this issue for Opera?

Any insight into what's causing the problem in Opera would be much appreciated as well.

Thanks!