title: Javascript not working in Chrome or IE9 - Error "Checkbox is not defined" shows in FF JS console
body: <p>The Function is...</p>
  
  <pre><code>function checkbox(val) {
      if (val==17831)  {
          document.getElementById
  
  ("Public_Product_line_questionpi_Public_Product_line_question_16171").disabled = false;
          document.getElementById
      }
  }
  </code></pre>
  
  <p>The DOM Checkbox Element is</p>
  
  <pre><code>&lt;input type="checkbox" name="General_Email_Opt_inpi_General_Email_Opt_in_17831" id="General_Email_Opt_inpi_General_Email_Opt_in_17831" value="17831" onchange="piAjax.auditField(this, 9782, 28771, 600841);" onclick="checkbox(17831)"/&gt;
  </code></pre>
  
  <p>Why does this not work in Chrome or IE-9? It works fine in Firefox<br>
  Why does the JS console in Chrome state "Uncaught ReferenceError: checkbox is not defined" ?</p>