title: Extjs dynamically loaded html/javascript gives an error
body: <p>I load a grid panel and associated html dynamically in my application. When it is loaded for the second time it gives an error like this.</p>
  
  <p>Uncaught Error: DOM element with id category-editor-grid1 in Element cache is not the same as element in the DOM. Make sure to clean up Element instances using destroy() </p>
  
  <p>Can someone explain how to do this?</p>