title: jQuery vertical navigation nenu with main links sliding to the left
body: <p>Has somebody seen a vertical navigation menu where the box with the main links slides to the left, revealing the sub links beneath it? So the main box is above the submenu box.</p>
  
  <p>I think it is not that hard in jQuery but I am no professional javascript programmer. An example would be great, if one exists.</p>
  
  <p>Example picture: On the left the main menu</p>
  
  <p><img src="https://i.stack.imgur.com/Va0bW.png" alt="menu"></p>