function toggle_art(tab){
switch(tab){
case 'article_wrapper':
document.getElementById('article_wrapper').style.display = 'block';
document.getElementById('discussions').style.display = 'none';

document.getElementById('article_wrapper_img').src = '/_images/editors/tab_articles_focus.jpg';
document.getElementById('discussions_img').src = '/_images/editors/tab_discussions.jpg';
break;
case 'discussions':
document.getElementById('discussions').style.display = 'block';
document.getElementById('article_wrapper').style.display = 'none';

document.getElementById('discussions_img').src = '/_images/editors/tab_discussions_focus.jpg';
document.getElementById('article_wrapper_img').src = '/_images/editors/tab_articles.jpg';
break;
}
}

function toggle_bio() {
if(document.getElementById('bio_overview').style.display == 'block'){
document.getElementById('bio_overview').style.display = 'none';
document.getElementById('bio').style.display = 'block';
}else{
document.getElementById('bio_overview').style.display = 'block';
document.getElementById('bio').style.display = 'none';
}
}