CWebDavTools::setShowOfferBannerForCurrentUser

static function setShowOfferBannerForCurrentUser($name, $value)
{
	global $USER;
	if($USER->getId() <= 0)
	{
		return false;
	}
	return CUserOptions::SetOption('webdav', '~banner-offer', array($name => (bool)$value), false, $USER->getId());
}