/**
 *
 * @access public
 * @return void
 **/
function showmessage(message){
	alert(message);
}

function showTotal()
{

var price=document.getElementById("room");
var soluong = document.getElementById('sophong');
total = price.value * soluong.value;
document.getElementById("txtTotal").value=total;
alert('Tổng số tiền phải trả là:'+total);
}

function checkprice()
  {
  var price=document.getElementById("room");
  document.getElementById("price").value=price.value;
  }