public function updateCMSFields(FieldList $fields) {
		$fields->addFieldsToTab(
			'Root.Mobile',
			array(
				OptionsetField::create('MobileSiteType', _t('MobileSiteConfig.MOBILESITEBEHAVIOUR', 'Mobile site behaviour'), $this->getMobileSiteTypes()),
				TextField::create('MobileDomain', _t('MobileSiteConfig.MOBILEDOMAIN', 'Mobile domain <small>(e.g. m.mysite.com, needs to be different from "Full site domain")</small>')),
				TextField::create('FullSiteDomain', _t('MobileSiteConfig.FULLSITEDOMAIN', 'Full site domain <small>(e.g. mysite.com, usually doesn\'t need to be changed)</small>')),
				DropdownField::create('MobileTheme', _t('MobileSiteConfig.MOBILETHEME', 'Mobile theme'), $this->owner->getAvailableThemes())
					->setEmptyString(_t('SiteConfig.DEFAULTTHEME', '(Use default theme)'))
			)
		);
	}