Menu issue on mobile devices.

Hi!
I have some problems with the menu on mobile devices and the Pinboard theme.

On my mobile (android), it looks something like this:

Is it possible to hide only this menu and only have the “mobile-meny” on mobile devices,
or
is it possible to get the text links visible in meny and not hiding the header image?
How do i do it?

Hope to get som advices! (and hope you understand my bad english :))

the webpage is:http://dev.barnensverkstad.se/