var uri = window.location.toString();
function toggle(divLayerName) {
   if (document.getElementById('b_sub_' + divLayerName) != null) {
      if (document.getElementById('b_sub_' + divLayerName).style.display=='block') {
         document.getElementById('b_sub_' + divLayerName).style.display='none';
         document.getElementById('b_sub_' + divLayerName).style.visibility='hidden';   
      } else {
         for (i = 0; i < 20; i++) {
            if (document.getElementById('b_sub_' + i)) {
               if (document.getElementById('b_sub_' + i).style.visibility == 'visible') {
                  document.getElementById('b_sub_' + i).style.display = 'none';
                  document.getElementById('b_sub_' + i).style.visibility = 'hidden';
               }
            }
         }
         if (document.getElementById('b_sub_' + divLayerName)){
            document.getElementById('b_sub_' + divLayerName).style.display = 'block';
            document.getElementById('b_sub_' + divLayerName).style.visibility = 'visible';
         }
      }
   }
}