title: How To remove Parent class base of child class by Prototype or jquery
body: <p>I want to remove class on base of child class in html content.</p>
  
  <pre><code>&lt;div class="mydds"&gt;
      &lt;dt&gt;&lt;label class="required"&gt;&lt;em&gt;*&lt;/em&gt;Light Source&lt;/label&gt;&lt;/dt&gt;
      &lt;dd class="last"&gt;
          &lt;div class="input-box"&gt;
              &lt;select style="width:230px;" name="super_attribute[224]" id="attribute224" class="required-entry super-attribute-select remArro" onchange="return changeSku(224, this);" disabled=""&gt;
                  &lt;option value="226" data-label="led retrofit/fluo"&gt;LED Retrofit/Fluo&lt;/option&gt;
               &lt;/select&gt;
          &lt;/div&gt;
      &lt;/dd&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>In this code in select you can see a class remArro, and in <code>&lt;dt&gt;&lt;label class="required"&gt;</code>. I want to remove required class on base of remArro class, is it possible?</p>