function popup_pdf(link1) 
{ 
window.open(link1,'popup_pdf','toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=yes, copyhistory=no, width=600, height=400, top=50, left=50');
}

function popup_gb(link2) 
{ 
window.open(link2,'popup_gb','toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, copyhistory=no, width=600, height=400, top=50, left=50');
}

function popup_mail(link3) 
{ 
window.open(link3,'popup_mail3','toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, copyhistory=no, width=600, height=500, top=50, left=50');
}