function servisan() 
{ 
window.open('http://www.servisan.com','mywindow','toolbar=yes, location=yes,directories=yes,status=yes,menubar=yes,scrollbars=yes,copyhistory=yes, resizable=yes'); 
}

function itam() 
{ 
window.open('http://www.itam.mx/contacto/asociaciones/ceea/index.htm','mywindow','toolbar=yes, location=yes,directories=yes,status=yes,menubar=yes,scrollbars=yes,copyhistory=yes, resizable=yes'); 
}