Html4 menu system which is seo-friendly while moving to html5

[gheh2013]

I have a complex site and very large site that we are moving to html5 as quickly as possible given our resources (long overdue) but I was wondering if anyone knew of a menuing system that would work on mobile that is seo-friendly in terms of do-follow and does not use javascript that the spiders often cannot read.

We need code/css that works for both the menu and for select boxes. I know few write such code anymore, and the idea is dated, but it is a temporary stopgap while we move to HTML5 when such tools are available.

Does any such code, free or commercial, exist anymore?

Thank you in advance as this is very important in terms of not usuing too much mobile real estate with side menus...

Best regards