problem with tabs

please have a look at http://libeinu.com/faq/ first it appears correctly and than it doesn’t what can be?
Also does the theme only works with reward? if we don’t put them in than after payment it doesn’t show that anything has been payed?!!
When clicking commit to funding before getting redirected to paypal i get Warning: error_log() expects parameter 2 to be long, string given in /usr/local/php53/pear/Log/error_log.php on line 153
thank you!