title: It says that TypeError: document.getElementById(...) is null
body: <p>Althought I pushed a parameter to getElementById I wonder from where is this 'is null' error coming from? </p>
  
  <pre><code>TypeError: document.getElementById(...) is null
  [Break On This Error]   
  
  document.getElementById(elmId).innerHTML = value;
  
  Line 75  
  </code></pre>
  
  <p>In addition to this i wonder why title and time did not show unless I click one of these playlist pictures?</p>