title: HTML, multiple select box, disable on selection
body: <p>I have a multiple <code>select</code> box in html. I am using the jQuery <code>chosen</code> plugin to make the select box more user friendly. I was hoping that I could implement the following function, but I had no idea how to do it. Forgive me, I am very new to HTML.</p>
  
  <p>I want the box to not allow any other input (i.e. become single select) when the user selects "Any" from the options list. </p>
  
  <p>Similarly, when the user inputs any other option except "Any", I want "Any" to be disabled.</p>
  
  <p>So for example I have a multiple <code>select</code> box with the following options: </p>
  
  <ul>
  <li>Any</li>
  <li>Germany</li>
  <li>France</li>
  <li>USA</li>
  <li>Saudi Arabia</li>
  </ul>
  
  <p>So basically the user can either select some combination of Germany, France, USA, and Saudi Arabia, but not with the "Any" option, or they can choose "Any" and nothing else.</p>