Website Binding

I know how to bind a "Default Web Site" in IIS to a specific IP address and port.  In fact, I have bound a website to port 8080.  I can get to the main site using http://URL:8080, but when I click on a link within the site the port designation goes away and defaults back to port 80.  

Does anyone know a way to bind all pages within a site to a specific port?