title: load a file content with spaces in file name
body: <pre><code>var path = 'nts/test_01.txt';
  div.load(path); // this works
  
  var path = 'nts/test 01.txt';
  div.load(path); // error - the file doesn't exists
  </code></pre>
  <p>Obviously a space is the problem.<br />
  How to solve this?<br />
  I can't change the file name.</p>