//by vietnam_youth@yahoo.com.vn
//<SCRIPT language=javascript1.2>
function expand(item) {
  var table=document.getElementById(item);
  var visible=(table.style.display!="none")
   if (visible) {
     table.style.display="none";
   } else {
      table.style.display="block";
   }
}

function expandhai(item) {
  var table=document.getElementById(item);
  var visible=(table.style.display!="none")
   if (visible) {
     table.style.display="none";
   } else {
      table.style.display="block";
   }
}