var Calculator=0;
var CurrencyCal=0;
function popUpWindowRoomCal()
{
  if(Calculator)
  {
    if(!Calculator.closed) Calculator.close();
  }
  Calculator = open('Calculator.aspx', 'Calculator', 'toolbar=0,titlebar=0,location=0,directories=0,statusbar=0,menubar=0,scrollbar=0,resizable=0,copyhistory=0,width=650,height=373,left=50, top=50,screenX=50,screenY=50');
}

function popUpWindowCurCal()
{
  if(CurrencyCal)
  {
    if(!CurrencyCal.closed) CurrencyCal.close();
  }
  CurrencyCal = open('Currency.htm', 'Currency', 'toolbar=0,titlebar=0,location=0,directories=0,statusbar=0,menubar=0,scrollbar=0,resizable=0,copyhistory=0,width=150,height=250,left=50, top=50');
}