title: Javascript rename file on download
body: <p>I want to be able to download a web file, but when the download dialog open, the filename is renamed.</p>
  
  <p>Ex: File: <code>http://&lt;server&gt;/&lt;site&gt;/test.txt</code></p>
  
  <p>and when I click to download the file, download dialog open with the file name: <code>test001.txt</code>.</p>
  
  <p>How can I achive that?</p>