function CalculateSleepTest() {
    ClearMessages();
	var t1=0; var t2=0; var t3=0;var t4 = 0; var t5=0;
    var elems = document.getElementsByName("cbsleepTest");
    for (var i = 0; i < elems.length; i++) {
        if (elems[i].checked) {
            if (elems[i].value == "1") t1 ++;
            else if (elems[i].value == "1") t1 ++;
            else if (elems[i].value == "2") t2 ++;
            else if (elems[i].value == "3") t3 ++;
            else if (elems[i].value == "4") t4 ++;
            else if (elems[i].value == "5") t5 ++;
        }
    }
    if (t1 >= 3) { document.getElementById("sleepAns1").style.display = ""; }
    if (t2 >= 3) { document.getElementById("sleepAns2").style.display = ""; }
    if (t3 >= 3) { document.getElementById("sleepAns3").style.display = ""; }
    if (t4 >= 3) { document.getElementById("sleepAns4").style.display = ""; }
    if (t5 >= 3) { document.getElementById("sleepAns5").style.display = ""; }
    if (t1 >= 3 || t2 >= 3 || t3 >= 3 || t4 >= 3 || t5 >= 3) {
        document.getElementById("sleepAns0").style.display = "";
    }
    else {
        document.getElementById("sleepAnsOK").style.display = "";
    }
}


function ClearSleepTest() {
    var elems = document.getElementsByName("cbsleepTest");
    for (var i = 0; i < elems.length; i++) {
        elems[i].checked = false;
    }
    ClearMessages();
}

function ClearMessages() {
	for (var j = 0; j < 6; j++) {
        document.getElementById("sleepAns" + j).style.display = "none";    
    }
    document.getElementById("sleepAnsOK").style.display = "none";
}