$form['advanced']['type']=array('#type'=>'checkboxes','#title'=>t('Only of the type'),'#prefix'=>'<div class="criterium">','#suffix'=>'</div>','#options'=>$types,'#multiple'=>true);
$form['advanced']['type']=array('#type'=>'checkboxes','#title'=>t('Only of the type'),'#prefix'=>'<div class="criterium">','#suffix'=>'</div>','#options'=>$types);
$form['advanced']['type']=array('#type'=>'checkboxes','#title'=>t('Only of the type'),'#prefix'=>'<div class="criterium">','#suffix'=>'</div>','#options'=>$types,'#multiple'=>true);
$form['advanced']['type']=array('#type'=>'checkboxes','#title'=>t('Only of the type'),'#prefix'=>'<div class="criterium">','#suffix'=>'</div>','#options'=>$types);