title: Dynamically hiding controls in an ExtJS Fieldset
body: <p>Is there any event to hide some controls in fieldset based on checkbox check/uncheck events </p>
  
  <p>thanks in advance</p>
  
  <hr>
  
  <p>sample code for (Listner of Fieldset )</p>
  
  <pre><code>listeners: {
            collapse: function () {
              //debugger;
              if (Ext.getDom('chkWarrantyCover').checked == false) {
                Ext.getCmp("WarrantyFieldset").expand();
                Ext.getDom('chkWarrantyCover').checked = false
                Ext.getDom('btnComEdit').style.visibility = "hidden";
                Ext.getDom('btnEditPerson').style.visibility = "hidden";
              }
              else
                Ext.getCmp("WarrantyFieldset").expand();
            }
          },
  </code></pre>