// preload "lit up" icons
pre_news = new Image(122,107); pre_news.src = 'site_images/news_on.jpg';
pre_bio = new Image(107,107); pre_bio.src = 'site_images/bio_on.jpg';
pre_books = new Image(127,107); pre_books.src = 'site_images/books_on.jpg';
pre_contact = new Image(136,107); pre_contact.src = 'site_images/contact_on.jpg';
pre_symbols = new Image(138,107); pre_symbols.src = 'site_images/symbols_on.jpg';

function mouseover(img) {
	the_image = document.getElementById(img);
	the_image.src = the_image.src.replace(/_off/, '_on');
}

function normal(img) {
	the_image = document.getElementById(img);
	the_image.src = the_image.src.replace(/_on/, '_off');
}