function onFolder(mode){

 var obj1=document.getElementById("Tab1");
 var obj2=document.getElementById("Tab2");
 var obj3=document.getElementById("Tab3");
 var obj4=document.getElementById("Tab4");

  var bkobj1=document.getElementById("tbbk1");
  var bkobj2=document.getElementById("tbbk2");
  var bkobj3=document.getElementById("tbbk3");
  var bkobj4=document.getElementById("tbbk4");

 if(mode==1){
  obj1.className="TabActive1";
  obj2.className="TabInactive2";
  obj3.className="TabInactive3";
  obj4.className="TabInactive4";
  
  bkobj1.style.display="";
  bkobj2.style.display="none";
  bkobj3.style.display="none";
  bkobj4.style.display="none";  
 }
 
 if(mode==2){
  obj1.className="TabInactive1";
  obj2.className="TabActive2";
  obj3.className="TabInactive3";
  obj4.className="TabInactive4";
  
  bkobj1.style.display="none";
  bkobj2.style.display="";
  bkobj3.style.display="none";
  bkobj4.style.display="none";  
 }
 
 if(mode==3){
  obj1.className="TabInactive1";
  obj2.className="TabInactive2";
  obj3.className="TabActive3";
  obj4.className="TabInactive4";
  
  bkobj1.style.display="none";
  bkobj2.style.display="none";
  bkobj3.style.display="";
  bkobj4.style.display="none";  
 }

 if(mode==4){
  obj1.className="TabInactive1";
  obj2.className="TabInactive2";
  obj3.className="TabInactive3";
  obj4.className="TabActive4";
  
  bkobj1.style.display="none";
  bkobj2.style.display="none";
  bkobj3.style.display="none";
  bkobj4.style.display="";  
 }

}