function setStyle(style, idarray) {
 for (var i=0; i<idarray.length;)
  document.getElementById(idarray[i++]).style.display = style;
}
 
function toggleOn(ids) {
 var idarray=ids.split(",");
 if (document.getElementById(idarray[0]).style.display=='none')
  setStyle('', idarray);
}
 
function toggleOff(ids) {
 var idarray=ids.split(",");
 setStyle('none', idarray);
} 
 
function toggle(ids) {
 var idarray=ids.split(",");
 if (document.getElementById(idarray[0]).style.display=='none')
  setStyle('', idarray);
 else
  setStyle('none', idarray);
}