Using FlexNav with WordPress [closed]

Question

Has anyone managed to get the FlexNav plugin - http://jasonweaver.name/lab/flexiblenavigation/ - working with WordPress?

I've got an HTML version of the site working fine, but I'm running into trouble when integrating with WordPress as WordPress uses it's own classes, ids etc. on menu items and this seems to override the flexnav plugin.

I'm wondering if I should be trying to replicate the menu structure that the plugin creates using a custom walker function, or just re-writing the CSS with what WordPress gives me?

Any advice appreciated!

Thanks