Active State in Navigation - CSS Navigation Tutorial - Active Navigation Tutorial CSS
http://www.sohtanaka.com/web-design/active-state-in-css-navigations/

I am sure you have been on a website where the navigation has an “active” state, basically showing you which page you are currently on. Take a look at my top navigation, you should see that the “Blog” link is in its active state. This technique is what you will be learning today. Take a look at the demo below to get a preview of what you will be creating. Also if you would like to download the PSD that we will be working with, go right ahead.

html+cssだけで、jsもphpも使わずメニューの現在地を取得する方法

nice menu tutorial