function tabMenu(show, hide)
{
   document.getElementById(show).style.display = "block";
   document.getElementById(show).className = "show";
   document.getElementById(show+"Link").className = "on";
   var ids = hide.split(',');
   for (i = 0 ; i < ids.length; i++) {
      document.getElementById(ids[i]).style.display = "none";
      document.getElementById(ids[i]+"Link").className = "";
   }

}