function WM_toggle_photogallery(id) {
  if (document.all){
    if(document.all[id].className == 'photogallery'){
      document.all[id].className = 'photogalleryhl';
    } else {
      document.all[id].className = 'photogallery';
    }
  } else if (document.getElementById){
    if(document.getElementById(id).className == 'photogallery'){
      document.getElementById(id).className = 'photogalleryhl';
    } else {
      document.getElementById(id).className = 'photogallery';
    }
  } 
}