//Switch1
function SwitchTab(num){
 for(var id = 1;id<=2;id++)
 {
  var ss="tb"+id;
  if(id==num)
  document.getElementById(ss).style.display="block";
  else
  document.getElementById(ss).style.display="none";
 }
 
 for(var id = 1;id<=2;id++)
 {
  var bb="tab"+id;
  if(id==num)
  document.getElementById(bb).className="td_on";
  else
  document.getElementById(bb).className="td_off";
 } 
}