<mx:HDividedBox width="100%" height="100%">
          <mx:Panel width="30%" height="100%" title="Adobe Flex 3 Component Explorer">
              <mx:Tree id="compLibTree" width="100%" height="100%" showRoot="false" labelField="@label"
                       change="treeChanged(event);"/>
          </mx:Panel>
          <mx:VDividedBox width="100%" height="100%">
              <explorer:explorer_loaderPanel id="swfLoader" width="100%" height="50%"/>
              <mx:VBox width="100%" height="50%" backgroundColor="#FFFFFF">
                  <explorer:explorer_viewsource id="vs" width="100%" height="100%"/>
              </mx:VBox>
          </mx:VDividedBox>
      </mx:HDividedBox>
  </mx:Application>