Thank you for your quick response. The ipad landscape position seems to be good screen size where a horizontal menu may be more suitable (for some users and websites) and it would be great to have (or a way to implement) that option in the theme. (by the way, your theme rocks! Thank you)
I have installed the plugin and made changes it, but the changes did not reflect. I have tried it on two different sites using the same theme, but the changes does not reflect.
Thank you.