function imgon(imgnum) {
	document.images[imgnum].src = '../images/nav/target2.gif';
	}

function imgoff(imgnum) {
	document.images[imgnum].src = '../images/spacer.gif';
	}

var quizansw = false;

function quizsound() {
for(i=0; i<document.forms[0].elements['answer'].length; i++) {
	var item = document.forms[0].elements['answer'][i];
    if(item.checked && item.value == 'correct') {
	document.forms[0].submit();
    }
    if(item.checked && item.value == 'wrong') {
	document.forms[0].submit();
    } 
    
}
}