title: how to download file from link contain image?
body: <p>I have a link contain, such as: </p>
  
  <pre><code>&lt;a id="clickLink" href="http://data.sinhvienit.net/2012/T12/img/SinhVienIT.Net---1302911-9xnacom29112012-11.jpg"&gt;download&lt;/a&gt;
  </code></pre>
  
  <p>I want to download this file when click link, not open new tab and display image. How to do it?</p>