var visible = {
    'question1': false,
	'question2': false
};
function toggleElement(elm, id) {
    var p = document.getElementById(id);
    if(visible[id]) {
        p.style.display = 'none';
        visible[id] = false;
    } else {
        p.style.display = 'block';
        visible[id] = true;
    }
    return false;
}