/*Copyright Relyon Softech ltd */
function changetab(show,close1,close2,close3,close4,obj) {
 if (document.getElementById) 
 {
  var a = document.getElementById(show).style;
  var b = document.getElementById(close1).style;
  var c = document.getElementById(close2).style;
  var d = document.getElementById(close3).style;
  var e = document.getElementById(close4).style;
   a.display = "block"; 
   b.display = "none";
   c.display = "none";
   d.display = "none";
   e.display = "none";
  return false;
  } else {
  return true;
 }
}