title: handler for a submit button
body: <p>I want to use a save button with a form in extjs. This is what i have as a handler</p>
  
  <pre><code>{
           xtype: 'button',
           handler: function(button, event) {
               var form = this.getForm();
               if (form.isValid()) {
                  Ext.MessageBox.alert('Submitted Values', form.getValues(true));
                                   }
                                             },
            height: 37,
            id: 'configurationDriversSave',
            text: 'Save'
  }
  </code></pre>
  
  <p>All i get now in firebug is an error: this.getForm is not a function. What am i doing wrong?</p>