if(typeof(lang) == 'string' && lang.length == 2) lang = '&lang=' + lang;
else lang = '';

if(typeof(smstext) == 'string') smstext = '&text=' + smstext;
else smstext = '';

if(typeof(smsnumber) == 'string') smsnumber = '&number=' + smsnumber;
else smsnumber = '';

if(typeof(uid) == 'string') myuid = '&myuid=' + uid;
else myuid = '';


uri = 'https://server2.sms-box.de/free_sms_box_main_file.php?id=' + box_id + myuid +
    '&ref=' + encodeURIComponent(document.location) + lang + smstext + smsnumber + '&token=7530662';


document.write('<iframe src="' + uri + '" frameborder="0" ' +
    'width="395" height="334" scrolling="no">' +
    '</iframe>');