function swapImg(newSrc) {
    document.getElementById('imgMain').src = newSrc;
}
function swapBlurb(newBlurb) {
    document.getElementById('blurb').innerHTML = newBlurb;
}
function showHide(obj) {
    el = document.getElementById(obj);
    if(el.style.display != 'none') {
	el.style.display = 'none';
    } else {
	el.style.display = '';
    }
}
function show_obj(obj) {
    el = document.getElementById(obj);
    el.style.display = '';
}
function hide_obj(obj) {
    el = document.getElementById(obj);
    el.style.display = 'none';
}