function show(object) {
   if (document.getElementById && document.getElementById(object) != null) {
      document.getElementById(object).style.visibility='visible';
      document.getElementById(object).style.display='block';
   }
   else if (document.layers && document.layers[object] != null)
      document.layers[object].visibility = 'visible';
   else if (document.all) {
      document.all[object].style.zIndex = 100;
      document.all[object].style.visibility = 'visible';
   }
}

function hide(object) {
   if (document.getElementById && document.getElementById(object) != null) {
      document.getElementById(object).style.visibility='hidden';
      document.getElementById(object).style.display='none';
   }
   else if (document.layers && document.layers[object] != null)
      document.layers[object].visibility = 'hidden';
   else if (document.all)
      document.all[object].style.visibility = 'hidden';
}

function switchview(object) {
   if (document.getElementById && document.getElementById(object) != null) {
      if (document.getElementById(object).style.visibility == 'hidden' || document.getElementById(object).style.visibility == '') {
         show(object);
      } else {
         hide(object);
      }
   } else if (document.layers && document.layers[object] != null) {
        if (document.layers[object].visibility == 'hidden') {
           show(object);
        } else {
           hide(object);
        }
   } else if (document.all) {
        if (document.all[object].style.visibility == 'hidden') {
           show(object);
        } else {
           hide(object);
        }
     }
}

if (document.getElementById) {
document.write('<style>.article {position:relative;visibility:visible;display:block}</style>');
}