function changeWho(){
document.getElementById('who').innerHTML='Bio';
buttonmode = true;
}
function resetWho() {
document.getElementById('who').innerHTML='Who';
}
function changeWhat(){
document.getElementById('what').innerHTML='Books';
}
function resetWhat() {
document.getElementById('what').innerHTML='What';
}
function change2W(){
document.getElementById('whenwhere').innerHTML='Appearances';
}
function reset2W() {
document.getElementById('whenwhere').innerHTML='When/Where';
}

function changeHowWhy(){
document.getElementById('howwhy').innerHTML='Resources';
}
function resetHowWhy() {
document.getElementById('howwhy').innerHTML='How/Why';
}