title: change value of attributes of a tag using javascript
body: <p>I have the following HTML generated by Drupal</p>
  
  <pre><code>&lt;fieldset id="webform-component-lunchset" class="webform-component-fieldset form-wrapper" style=""&gt;
      &lt;div id="webform-component-lunchset--lunch" class="form-item webform-component webform-component-radios webform-container-inline" style=""&gt;
          ...Radio Button div tags here
      &lt;/div&gt;
  &lt;/fieldset&gt;
  &lt;fieldset id="webform-component-dinnerset" class="webform-component-fieldset form-wrapper" style="display: none;"&gt;
      &lt;div id="webform-component-dinnerset--dinner" class="form-item webform-component webform-component-radios webform-container-inline" style="display: none;"&gt;
          ...Radio Button div tags here
      &lt;/div&gt;
  &lt;/fieldset&gt;
  </code></pre>
  
  <p>My intent is to allow the user to choose a meal time based on the hour of the day when he initiates a booking. To do this I noticed that I have to change style="display: none;" for the field set I want to hide and style="" for the one I want displayed. I have the following Javascript statements to change the style attribute of the DIV tags but it doesn't seem to work. Any help would be appreciated.</p>
  
  <pre><code>window.onload = (function() { 
      var today = new Date();
      var day = today.getDay();
      var hour = today.getHours();
      var lunchtime1 = document.getElementById('webform-component-lunchset');
      var lunchtime2 = document.getElementById('webform-component-lunchset--lunch');
      var dinnertime1 = document.getElementById('webform-component-dinnerset');
      var dinnertime2 = document.getElementById('webform-component-dinnerset--dinner');
      if (hour &gt;= 15 &amp;&amp; hour &lt; 22) {
          lunchtime1.style="display: none;";
          lunchtime2.style="display: none;";
          dinnertime1.style=" ";
          dinnertime2.style=" ";
          sundaytime1.style="display: none;";
      }
  });
  </code></pre>
  
  <p>Not sure why it isn't working, would appreciate any help. Thank you in advance</p>