function news()
{
news=window.open('letter.php', 'news', 'toolbar=no,menubar=no,scrollbars=no, resizable=yes,status=no,location=no,directories=no,top=400, left=300,fullscreen=no,height=170,width=250');
} 
function forma()
{
window.open('forma.html', 'forma', 'toolbar=no,menubar=no,scrollbars=no, resizable=yes,status=no,location=no,directories=no,top=0, left=0,fullscreen=no,height=450,width=520');
} 
function forma2()
{
window.open('forma2.html', 'forma', 'toolbar=no,menubar=no,scrollbars=no, resizable=yes,status=no,location=no,directories=no,top=0, left=0,fullscreen=no,height=450,width=520');
}
function forma3()
{
window.open('forma3.html', 'forma', 'toolbar=no,menubar=no,scrollbars=no, resizable=yes,status=no,location=no,directories=no,top=0, left=0,fullscreen=no,height=450,width=520');
}
function forma4()
{
window.open('forma4.html', 'forma', 'toolbar=no,menubar=no,scrollbars=no, resizable=yes,status=no,location=no,directories=no,top=0, left=0,fullscreen=no,height=450,width=520');
}