home = new Image();
home.src = 'images/nav_home.jpg';
home_over = new Image();
home_over.src = 'images/nav_home_over.jpg';

about = new Image();
about.src = 'images/nav_about.jpg';
about_over = new Image();
about_over.src = 'images/nav_about_over.jpg';


services = new Image();
services.src = 'images/nav_services.jpg';
services_over = new Image();
services_over.src = 'images/nav_services_over.jpg';

contact = new Image();
contact.src = 'images/nav_contact.jpg';
contact_over = new Image();
contact_over.src = 'images/nav_contact_over.jpg';


function navRoll(navName,navState) {
	if (document.images) {
		document.images[navName].src = eval(navState + ".src");
	}
}