How to show home page URL in address bar in different pages I want URL is not changed if I click different tabs on navigation bar?

my url is look like this http://localhost:8080/HorizontalSubmenu/Home.aspx
http://localhost:8080/HorizontalSubmenu/Contact.aspx
http://localhost:8080/HorizontalSubmenu/adsress.aspx
http://localhost:8080/HorizontalSubmenu/feedback.aspx

I want in every page it shows http://localhost:8080/HorizontalSubmenu