title: How to save scroll position on an extjs form?
body: <p>I have a long form with comboboxes and buttons that add element to the form. Every time combobox's value gets upldated or elements get added, it scrolls up to the top of the form. I want the scrollbar to retain its position. I tried saving current scroll position by doing</p>
  
  <pre><code>     this.myForm.getScrollPosition();
  </code></pre>
  
  <p>But I get getScrollPosition is not a function error.</p>
  
  <p>Any help on this?</p>