function finestra(str) {
        searchWin = window.open(str,'finestra','scrollbars=yes,resizable=no,width=730,height=750,status=no,location=no,toolbar=no');
}

function chi(str) {
        searchWin = window.open(str,'finestra','scrollbars=no,resizable=no,width=700,height=458,status=no,location=no,toolbar=no');
}

function gt(str) {
        searchWin = window.open(str,'gt','scrollbars=no,resizable=no,width=600,height=400,status=no,location=no,toolbar=no');
}