protected function getClient($redirecturl = '') {
		// keep only one instance during a session
		if (is_object($this->linkedin)) {
			return $this->linkedin;
		}
		
		if ($redirecturl == '') {
			$redirecturl = $this->redirecturl;
		} else {
			$this->redirecturl = $redirecturl;
		}
		$this->logQ('redirect '.$redirecturl,'linkedin');
		
		$API_CONFIG = array(
			'api_key' => $this->options['api_key'],
			'api_secret' => $this->options['api_secret'],
			'callback_url' => $redirecturl
			);
			
		$this->linkedin = $linkedin = new \LinkedIn\LinkedIn($API_CONFIG);
		
		return $this->linkedin;
	}