title: How can I set the image opacity for body background
body: <p>How can I set the image opacity for the image in the background of the <code>body</code> tag</p>
  
  <p><a href="http://jsfiddle.net/k4dw5hyq/" rel="noreferrer">fiddle</a></p>
  
  <p>my html:</p>
  
  <pre><code>&lt;body background="http://ib1.keep4u.ru/b/070815/ef2714da63d5940bf5.jpg"&gt;
      &lt;div&gt;test&lt;/div&gt;
      &lt;div&gt;test&lt;/div&gt;
      &lt;div&gt;test&lt;/div&gt;
      &lt;div&gt;test&lt;/div&gt;
      &lt;div&gt;test&lt;/div&gt;
      &lt;div&gt;test&lt;/div&gt;
      &lt;div&gt;test&lt;/div&gt;
  &lt;/body&gt;
  </code></pre>
  
  <p>my css:</p>
  
  <pre><code>body{
      opacity: 0.1,
      filter:alpha(opacity=10)
  }
  </code></pre>