// Changes the class of the given tag from classa to classb or back
 function classoggle(tag, classa, classb) {
   if (tag.className==classa){
      tag.className=classb;
    } else {
      tag.className=classa;
     }
 }
 
 // Toggles the class name of the indexed div between 'showmeinline' and 'showmeinline'
   function visoggle(divID) {
      var d = document.getElementById(divID);
      classoggle(d, 'hideme', 'showme');
   }