CSS Library: Vertical CSS Menus: CSS3 demos: Here
Mobile full screen expand menu
Author: Dynamic Drive
Full screen menus are quite the rage these days, as they work out of the box across devices big and small with their large footprint. This mobile full screen menu expands itself to fill the whole page when activated, using the popular CSS checkbox adjacent sibling technique to toggle the menu between open and closed when the drawer style toggler is clicked on. The menu works across all modern browsers and mobile devices, while in IE8, a more limited interface is presented that's at least functional for those users.
with the "action" parameter being one of the following three choices: "open", "close", or empty. When called with no (or empty) parameter, the function will toggle the state of the full page menu. Here's an example:
<a href="#" onClick="expandfullscreenmenu()">Arbitrary Toggle Menu link</a>