title: Change opacity of other tab when I hover current tab
body: <p>I create a dropdown menu. I need when I hover to a tab, the opacity of other tabs in menu are change except the current tab I hover.</p>
  
  <p>Example: when I hover to Home Tab, state of Home tab and list item is not changed (yellow color, opacity=1) but other tabs (Tutorial, Article, Inspiration) are changed (grey color, opacity=0.5)</p>
  
  <pre><code>&lt;code&gt;http://jsfiddle.net/dennisho/6fX42/2/&lt;/code&gt;
  </code></pre>