function loadHOF() {
var obj = document.getElementById('viewport').innerHTML;
document.getElementById('viewport').innerHTML = ("");
}
function loadSend() {
var obj = document.getElementById('viewport').innerHTML;
document.getElementById('viewport').innerHTML = ("");
}
function loadRampage() {
var obj = document.getElementById('viewport').innerHTML;
document.getElementById('viewport').innerHTML = ("");
}
function loadInstructions() {
var obj = document.getElementById('viewport').innerHTML;
document.getElementById('viewport').innerHTML = ("");
}