function calculateScore()
{
	var score = 0;
	var theForm = document.getElementById("questionnaire");
	var theResult = document.getElementById("results");
	var theResultMsg = document.getElementById("results_msg");
	var theButton = document.getElementById("scorebtn");
	for (var i = 0; i < 20; i++)
	{
		var theQ = "q" + i;
		var radioGrp = theForm.elements[theQ];
		var answered = false;
		for (var j = 0; j < radioGrp.length; j++) {
    		if (radioGrp[j].checked) {
    		    score += parseInt(radioGrp[j].value);
				answered = true;
    		}
		} 
		if (answered == false) {
			alert("Oops, you forgot to answer Question " + (i + 1) + ".");
			return;
		}
	}
	if (score >= 24)
		theResultMsg.innerHTML = "Your score is " + score + ".  You're doing great!";
	else
		theResultMsg.innerHTML = "Your score is " + score + ".  Consider <a href='/store/e-books/minding-your-manners-everyday-matters/'>Personal Impact Guide to Minding Your Manners in Everyday Matters</a> or a Session with Personal Impact to develop your potential!";
	theResult.style.visibility = "visible";
	theButton.disabled = true;
	for (var i = 0; i < 20; i++)
	{
		var theQ = "q" + i;
		var radioGrp = theForm.elements[theQ];
		for (var j = 0; j < radioGrp.length; j++)
    		radioGrp[j].disabled = true;
	}
	return;
}