var homepage = newImage('assets/images/nav/home.gif');
var homepage_over = newImage('assets/images/nav/home_over.gif');
var about = newImage('assets/images/nav/about.gif');
var about_over = newImage('assets/images/nav/about_over.gif');
var portfolio = newImage('assets/images/nav/portfolio.gif');
var portfolio_over = newImage('assets/images/nav/portfolio_over.gif');
var studio = newImage('assets/images/nav/studio.gif');
var studio_over = newImage('assets/images/nav/studio_over.gif');
var desk = newImage('assets/images/nav/desk.gif');
var desk_over = newImage('assets/images/nav/desk_over.gif');
var newsletter = newImage('assets/images/nav/newsletter.gif');
var newsletter_over = newImage('assets/images/nav/newsletter_over.gif');
var contact = newImage('assets/images/nav/contact.gif');
var contact_over = newImage('assets/images/nav/contact_over.gif');