php Menu system needed for wordpress sites

I need a top level drop down menuing system where the drop down goes wide and stays above the fold. I use word press to run my sites and use the template pagelines Pro. the dropdowns are only vertical and on a laptop or smaller screen will drop past the fold. if you look at [login to view URL], their drop down menus only drop 3/4 of the screen length and them go wide, with several columns in the drop down. My idea is that off the navigation menu, one tab would be PRODUCTS and the hover over would show a drop down that is about 7 entries to the vertical and 3 or 4 columns wide. we can use [login to view URL] as the test site, but the menu modules that are designed should be able to implement on any pageline pro templated website.