var openKat   = -1;

function showKat(id) {
 if( openKat == id ) {
  $('kat' + openKat).style.display='none';
  openKat   = -1;
  return;
 }
 if( openKat != -1 ) {
  $('kat' + openKat).style.display='none';
  openKat   = -1;
 }
 $('kat' + id).style.display='block';
 openKat = id;
}

function showAns(id){
 if($('ans' + id).style.display == 'block' ) {
  $('ans' + id).style.display='none';
  return;
 }
 new Ajax.Updater('ans'+id, '/faq.ajax.php', {
   method: 'get',
   parameters: { 'ans': id },
   onSuccess: function(transport) {
    $('ans' + id).style.display='block';
   }
   });

}

function load(id) {
   new Ajax.Updater('videos', 'faq_videos.php', {
   method:      'get',
   parameters:  { 'id': id }
  });
}