Currently, most  designers prefer designing a  responsive web design and it is a combination of fluid layout and the media queries. It is used to generate a website in such a way which works perfectly on any size of a  screen for any device irrespective of it being a mobile or computer. There are several factors which work for creating a user experience in a web design to make it responsive but below tips will aid in enhancing  a mobile navigation:

-   Change the Visual Design of the Menu

-   Create a menu in such a way which is easy to tap

-   Reposition the Navigation Menu on Very Small Screens

-   Various Menus for Various Devices

I just started new company and i want to hire a new webdesign for my mobile application if you interest than please tell me.

Hey friends, there are various tutorials  available on the internet to guide you about building responsive menus to enhance a mobile website navigation. Have a look at this

http://speckyboy.com/2012/08/29/10-responsive-navigation-solutions-and-tutorials/,

it offers you a number of responsive navigation solutions and tutorials.

Creating a responsive menus that's very important thing for any mobile website to enhance it's navigation, when access it on the mobile device. Responsive menus can help to make a mobile website user friendly.