function init_questions() {
	if (document.getElementById("questionblock")) {
		var questions = document.getElementById("questionblock").getElementsByTagName("a");
		for (var i=0; i<questions.length; i++) {
			questions[i].onclick = function() { select_question(this.id); hide_answers(); show_answer(this.id); return false; };
		}
	}
	select_question('q1');
	hide_answers();
	show_answer('a1');
}

function select_question(qnum) {
	for (var i=1; i<12; i++) {
		if ((document.getElementById("q" + i)) && (qnum != ("q" + i))) {
			document.getElementById("q" + i).setAttribute((document.all ? 'className' : 'class'), '');
		} else {
			document.getElementById(qnum).setAttribute((document.all ? 'className' : 'class'), 'selected');
		}
	}
}

function hide_answers() {
	for (var i=1; i<12; i++) {
		if (document.getElementById("a" + i)) {
			document.getElementById("a" + i).setAttribute((document.all ? 'className' : 'class'), 'ans_off');
		}
	}
}

function show_answer(num) {
	num = num.slice(1);
	if (document.getElementById("a" + num)) {
		document.getElementById("a" + num).setAttribute((document.all? 'className' : 'class'), 'ans_on');
	}
}