title: How to adjust the height and width of the Panel in Sencha touch?
body: <p>Suppose I have 3 different Panels  [bottomCar0,bottomCar1,bottomCar2] and want to adjust the height and width of them as per my requirement, how can i do that??   </p>
  
  <p>My Code   :  </p>
  
  <pre><code>  var bottomCar=new Ext.Panel({    
              layout:{    
                  type:'hbox',    
                  align:'stretch'    
              },    
              defaults:{    
                flex:1  
             },  
              items: [bottomCar0,bottomCar1,bottomCar2]    
  
        });  
  </code></pre>
  
  <p>how can i change the defaults??</p>
  
  <p>Thnaks<br>
  Sneha</p>