title: how to get a CSSStyleSheet object from a HTMLStyleElement element
body: <p>Is it possible to get the CSSStyleSheet object (<code>document.styleSheets[0]</code>) from a HTMLStyleElement (<code>document.createElement('style')</code>) ?</p>
  
  <p>I would like to dynamically add css rules to a not-inserted-in-the-document-yet <code>&lt;style&gt;</code> element.</p>