function checkElearningQuestions(){
        var l = document.elearningForm.length-1;
        var b = "";
        var unansweredQuestions = new Array();
        for(i=0; i<l; i++){
            var myName = document.elearningForm[i].name;
            if(myName.indexOf("c")==0){
                checkedMe = false;
                for(k=0;k<4;k++){
                    if(document.elearningForm[myName][k] && document.elearningForm[myName][k].checked){checkedMe = true;break;}
                }
                if(!checkedMe){unansweredQuestions.push(document.elearningForm[i].name);}
                i+=2;
            }
        }
        if(unansweredQuestions.length>0){
            displayAnswerAllAlert();
            for(i=0;i<unansweredQuestions.length;i++){
                var n = "q"+unansweredQuestions[i];
                $("#"+n).addClass("unansweredquestion");
            }
            return false;
        }
        return true;

    }
    function checkQuestion(checkName, checkValue){
        resetCheckBoxes(checkName, checkValue);
        document.elearningForm[checkName][checkValue].checked = true;
        $("#"+checkName+"a"+checkValue).css("color", "#DA2670");
    }

    function selectQuestion(checkName, checkValue){
        resetCheckBoxes(checkName, checkValue);
        if(!document.elearningForm[checkName][checkValue].checked){
            $("#"+checkName+"a"+checkValue).css("color", "#DA2670");
        }
        document.elearningForm[checkName][checkValue].checked = !document.elearningForm[checkName][checkValue].checked;
    }
    function displayOnlyOneAlert(){
        alert("There is only one correct answer.");
    }
    function displayAnswerAllAlert(){
        alert("Please answer all questions");
    }
    function resetCheckBoxes(checkName, checkValue){
        // reset border
        $("#q"+checkName).removeClass("unansweredquestion");
        // reset color
        $("#"+checkName+"a0").css("color", "");
        $("#"+checkName+"a1").css("color", "");
        $("#"+checkName+"a2").css("color", "");
        $("#"+checkName+"a3").css("color", "");
        // reset checkboxes
        var preselected = false;
        if (checkValue != '0' && document.elearningForm[checkName][0].checked){preselected = true;}
        if (checkValue != '1' && document.elearningForm[checkName][1].checked){preselected = true;}
        if (checkValue != '2' && document.elearningForm[checkName][2].checked){preselected = true;}
        if (checkValue != '3' && document.elearningForm[checkName][3] && document.elearningForm[checkName][3].checked){preselected = true;}
        if (preselected){
            displayOnlyOneAlert();
            document.elearningForm[checkName][0].checked = false;
            document.elearningForm[checkName][1].checked = false;
            document.elearningForm[checkName][2].checked = false;
            if(document.elearningForm[checkName][3]){document.elearningForm[checkName][3].checked = false;}
        }
    }