function goFrame()
{
    var fr = document.getElementById('MTframe');
    var num = document.getElementById('MTnumber');
    var code = document.getElementById('MTcode');
    fr.src = "http://mserv.ee/mserv/trackandtrace?taskId=" + num.value + "&identificationId=" + code.value + "&lang=ET&consumer=renerk-ee";
}