title: Extjs disable native grid scroll
body: <p>My extjs version is 4.0.2a. Sometimes vertical scrollbar in grid stops working. It is common problem. I've found some solutions, but they didn't work for me:</p>
  
  <pre><code>this.Grid.hideVerticalScroller();
  this.Grid.initVerticalScroller();
  this.Grid.update();
  this.Grid.determineScrollbars();
  this.Grid.forceComponentLayout();
  this.Grid.doComponentLayout();
  </code></pre>
  
  <p>I've also tried scroll: false, but it didn't work too and maked my browser stop responding.
  I think, I can disable extjs grid scrollbar and add browser standart scrollbars (overflow:auto), but I don't know how.
  Any suggestions?</p>
  
  <hr>
  
  <p>P.S. I can't use another version Extjs, because there is very big working project with some fixes in some core files. It will be very hard to make all work with new version of Extjs</p>