semi automatic?

function _getLoginRegisterPostData()
    {
        $session = JFactory::getSession();
        $postData = $session->get('postDataLoginRegister', array());

        $this->assignRef('postData', $postData);

        $loginRegisterModel = $this->getModel('LoginRegister', 'JFBConnectModel');
        $jfbcLibrary = JFBConnectFacebookLibrary::getInstance();
        $fbUserId = $jfbcLibrary->getFbUserId();
        $fbUser = $jfbcLibrary->_getUserName($fbUserId);
        $postData['username'] = $loginRegisterModel->getAutoUsername($fbUser, $fbUserId, 2);

        $this->assignRef('postDataUsername', $postData['username']);
    }

<div class="label username"><label><?php echo JText::_('COM_JFBCONNECT_USERNAME') ?></label></div><input type="text" class="inputbox required" id="username" name="username" value="<?php echo $this->postDataUsername;?>" size="20" onblur="jfbc.register.checkUsernameAvailable()" /><br/>

<input type="hidden" id="username" name="username" value="<?php echo $this->postDataUsername;?>" />

<div class="label password"><label><?php echo JText::_('COM_JFBCONNECT_PASSWORD')?></label></div><input type="password" class="inputbox required" id="password" name="password" value="" size="20" onblur="jfbc.register.checkPassword()" /><br/>
		<div id="jfbcPasswordSuccess"></div>
                <div class="label password1"><label><?php echo JText::_('COM_JFBCONNECT_VERIFY_PASSWORD') ?></label></div><input type="password" class="inputbox required" id="password2" name="password2" value="" size="20" onblur="jfbc.register.checkPassword2()"/><br/>
                <div id="jfbcPassword2Success"></div>

<?php $pass = JUserHelper::genRandomPassword(); ?>
<input type="hidden" id="password" name="password" value="<?php echo $pass; ?>" />
<input type="hidden" id="password" name="password2" value="<?php echo $pass; ?>" />