// pop-up window function
leftPos = 0
if (screen){
        leftPos = screen.width/2-250
}
function popupWindow(address, name) {
        referWindow = window.open( address,
                                   name,
                                  'width=635,height=705,left='+leftPos+',top=50,toolbar=no,location=no,status=no,scrollbars=yes,directories=no,menubar=no,resizable=no')
}