JS to achieve a 3D three-dimensional vertical folding menu code _javascript tips

The example of this article describes the JS implementation with 3D three-dimensional gray vertical folding menu code. Share to everyone for your reference, specific as follows:

This is a super cool can be used to the left side of the page silver Gray vertical Multi-level folding menu, you can add a background for the menu, CSS reserved code, this is the comparison standard and classic a background management mode of the menu, DIV+CSS structure, in line with the standard, easy to modify, very good.

The screenshot of the running effect is as follows:

The online demo address is as follows:

http://demo.jb51.net/js/2015/js-3d-left-yhs-menu-demo/

The specific code is as follows:

<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">  

I hope this article will help you with your JavaScript programming.