title: html load conditional value to select tag
body: <p>I try to load conditional value to a select tag based on the user's choice on a pervious form tag. it might require java or php. i am not competent in any of those two language.
  the logic is explain as the following.</p>
  
  <pre><code>&lt;form&gt;
    &lt;input name="complaint" value="copyright" type="radio"&gt;copyright &lt;br&gt;
    &lt;input name="complaint" value="trademark" type="radio"&gt;trademark &lt;br&gt;
    &lt;input name="complaint" value="other_concern" type="radio"&gt; other concerns
  &lt;/form&gt;
  
  
  if complaint="copyright" then
  &lt;select&gt;
    &lt;option value="image"&gt;image&lt;/option&gt;
    &lt;option value="product"&gt;product&lt;/option&gt;
  &lt;/select&gt;
  elseif complaint="trademark" then
  &lt;select&gt;
    &lt;option value="item"&gt;item&lt;/option&gt;
    &lt;option value="image"&gt;image&lt;/option&gt;
  &lt;/select&gt;
  elseif complaint="other_concern"
  &lt;select&gt;
    &lt;option value="explain"&gt;explain&lt;/option&gt;
  &lt;/select&gt;
  end if
  </code></pre>
  
  <p>any solution?</p>