function show_block(div_id,latch_id) {
    // hide all the divs
	document.getElementById('questions1').style.display = 'none';	
	document.getElementById('questions2').style.display = 'none';	
	document.getElementById('questions3').style.display = 'none';	
	document.getElementById('questions4').style.display = 'none';	
	document.getElementById('questions5').style.display = 'none';	
	document.getElementById('questions6').style.display = 'none';	
	document.getElementById('questions7').style.display = 'none';	
	document.getElementById('questions8').style.display = 'none';	
	document.getElementById('questions9').style.display = 'none';


	document.getElementById('latch1').style.display = 'none';	
	document.getElementById('latch2').style.display = 'none';	
	document.getElementById('latch3').style.display = 'none';
	document.getElementById('latch4').style.display = 'none';	
	document.getElementById('latch5').style.display = 'none';	
	document.getElementById('latch6').style.display = 'none';	
	document.getElementById('latch7').style.display = 'none';	
	document.getElementById('latch8').style.display = 'none';	
	document.getElementById('latch9').style.display = 'none';

	// clear any selected answers
    document.getElementById('answer1').style.display = 'none';	
    document.getElementById('answer2').style.display = 'none';	
    document.getElementById('answer3').style.display = 'none';	
    document.getElementById('answer4').style.display = 'none';	
    document.getElementById('answer5').style.display = 'none';	
    document.getElementById('answer6').style.display = 'none';	
	document.getElementById('answer7').style.display = 'none';	
	document.getElementById('answer8').style.display = 'none';	
	document.getElementById('answer9').style.display = 'none';	
	document.getElementById('answer10').style.display = 'none';	
	document.getElementById('answer11').style.display = 'none';	
	document.getElementById('answer12').style.display = 'none';	
	document.getElementById('answer13').style.display = 'none';	
	document.getElementById('answer14').style.display = 'none';	
	document.getElementById('answer15').style.display = 'none';	
	document.getElementById('answer16').style.display = 'none';	
	document.getElementById('answer17').style.display = 'none';	
	document.getElementById('answer18').style.display = 'none';	
	document.getElementById('answer19').style.display = 'none';	
	document.getElementById('answer20').style.display = 'none';	
	document.getElementById('answer21').style.display = 'none';	
	document.getElementById('answer22').style.display = 'none';	
	document.getElementById('answer23').style.display = 'none';	
	document.getElementById('answer24').style.display = 'none';	
	document.getElementById('answer25').style.display = 'none';	
	document.getElementById('answer26').style.display = 'none';	
	document.getElementById('answer27').style.display = 'none';	
	document.getElementById('answer28').style.display = 'none';	
	document.getElementById('answer29').style.display = 'none';	
	document.getElementById('answer30').style.display = 'none';	
	document.getElementById('answer31').style.display = 'none';	
	document.getElementById('answer32').style.display = 'none';	
	document.getElementById('answer33').style.display = 'none';	
	document.getElementById('answer34').style.display = 'none';	
	document.getElementById('answer35').style.display = 'none';	
	document.getElementById('answer36').style.display = 'none';	
	document.getElementById('answer37').style.display = 'none';	
	document.getElementById('answer38').style.display = 'none';	
	document.getElementById('answer39').style.display = 'none';	
	document.getElementById('answer40').style.display = 'none';	
	document.getElementById('answer41').style.display = 'none';	
	document.getElementById('answer42').style.display = 'none';	
	document.getElementById('answer43').style.display = 'none';	
	document.getElementById('answer44').style.display = 'none';	
	document.getElementById('answer45').style.display = 'none';	
	document.getElementById('answer46').style.display = 'none';	
	document.getElementById('answer47').style.display = 'none';	
	document.getElementById('answer48').style.display = 'none';	
	document.getElementById('answer49').style.display = 'none';
	document.getElementById('answer50').style.display = 'none';
	document.getElementById('answer51').style.display = 'none';
	document.getElementById('answer53').style.display = 'none';
	document.getElementById('answer54').style.display = 'none';
	
	
	
	
	// show the requested div
    document.getElementById(div_id).style.display = 'block';
	document.getElementById(latch_id).style.display = 'block';
}

function show_answer(answer_id) {
	// hide all answers
    document.getElementById('answer1').style.display = 'none';	
    document.getElementById('answer2').style.display = 'none';	
    document.getElementById('answer3').style.display = 'none';	
    document.getElementById('answer4').style.display = 'none';	
    document.getElementById('answer5').style.display = 'none';	
    document.getElementById('answer6').style.display = 'none';	
	document.getElementById('answer7').style.display = 'none';	
	document.getElementById('answer8').style.display = 'none';	
	document.getElementById('answer9').style.display = 'none';	
	document.getElementById('answer10').style.display = 'none';	
    document.getElementById('answer11').style.display = 'none';	
    document.getElementById('answer12').style.display = 'none';	
    document.getElementById('answer13').style.display = 'none';	
	document.getElementById('answer14').style.display = 'none';	
    document.getElementById('answer15').style.display = 'none';	
	document.getElementById('answer16').style.display = 'none';	
    document.getElementById('answer17').style.display = 'none';	
    document.getElementById('answer18').style.display = 'none';	
    document.getElementById('answer19').style.display = 'none';	
    document.getElementById('answer20').style.display = 'none';	
    document.getElementById('answer21').style.display = 'none';	
	document.getElementById('answer22').style.display = 'none';	
	document.getElementById('answer23').style.display = 'none';	
	document.getElementById('answer24').style.display = 'none';	
	document.getElementById('answer25').style.display = 'none';	
    document.getElementById('answer26').style.display = 'none';	
    document.getElementById('answer27').style.display = 'none';	
    document.getElementById('answer28').style.display = 'none';	
	document.getElementById('answer29').style.display = 'none';	
    document.getElementById('answer30').style.display = 'none';	
	document.getElementById('answer31').style.display = 'none';	
	document.getElementById('answer32').style.display = 'none';	
	document.getElementById('answer33').style.display = 'none';	
	document.getElementById('answer34').style.display = 'none';	
	document.getElementById('answer35').style.display = 'none';	
    document.getElementById('answer36').style.display = 'none';	
    document.getElementById('answer37').style.display = 'none';	
    document.getElementById('answer38').style.display = 'none';	
	document.getElementById('answer39').style.display = 'none';	
    document.getElementById('answer40').style.display = 'none';	
	document.getElementById('answer41').style.display = 'none';	
	document.getElementById('answer42').style.display = 'none';	
	document.getElementById('answer43').style.display = 'none';	
	document.getElementById('answer44').style.display = 'none';	
	document.getElementById('answer45').style.display = 'none';	
    document.getElementById('answer46').style.display = 'none';	
	document.getElementById('answer47').style.display = 'none';	
    document.getElementById('answer48').style.display = 'none';	
	document.getElementById('answer49').style.display = 'none';
	document.getElementById('answer50').style.display = 'none';
	document.getElementById('answer51').style.display = 'none';
	document.getElementById('answer53').style.display = 'none';
	document.getElementById('answer54').style.display = 'none';
    
	// show the requested answer
	document.getElementById(answer_id).style.display = 'block';

}