public function changePasswordAction(){

        $validate = 0;
        $result = '';
        $customer = Mage::getSingleton ( 'customer/session' );


        if ($customer->isLoggedIn()):

            echo $customerid = $customer->getCustomer()->getId();
            echo $oldpassword = $this->getRequest()->getParam('oldpassword');
            echo $newpassword = $this->getRequest()->getParam('newpassword');
            $username = $customer->getCustomer()->getEmail();


            $websiteId = Mage::getModel('core/store')->load($this->storeId)->getWebsiteId();
            try {
                 $login_customer_result = Mage::getModel('customer/customer')->setWebsiteId('1')->authenticate($username, $oldpassword);
                 $validate = 1;
            }
            catch(Exception $ex) {
                 $validate = 0;
            }
            if($validate == 1) {
                 try {
                      $customer = Mage::getModel('customer/customer')->load($customerid);
                      $customer->setPassword($newpassword);
                      $customer->save();

                      echo  json_encode(array('status'=>'success','message'=>'Your Password has been Changed Successfully'));
                      exit;
                 }
                 catch(Exception $ex) {
                    echo  json_encode(array('status'=>'error','message'=>'Error : '.$ex->getMessage()));
                    exit;

                 }
            }
            else {

                 echo  json_encode(array('status'=>'error','message'=>'Incorrect Old Password.'));
                 exit;
            }

        else:
            echo  json_encode(array('status'=>'error','message'=>'Kindly Signin first.'));
            exit;
        endif;


     }