function imgPreload() {
	home_off = new Image(); home_off.src = "/images/nav_home.png";
	home_on = new Image(); home_on.src = "/images/nav_home_on.png";
	about_off = new Image(); about_off.src = "/images/nav_about.png";
	about_on = new Image();	about_on.src = "/images/nav_about_on.png";
	events_off = new Image(); events_off.src = "/images/nav_events.png";
	events_on = new Image(); events_on.src = "/images/nav_events_on.png";
	news_off = new Image(); news_off.src = "/images/nav_news.png";
	news_on = new Image(); news_on.src = "/images/nav_news_on.png";
	contact_off = new Image(); contact_off.src = "/images/nav_contact.png";
	contact_on = new Image(); contact_on.src = "/images/nav_contact_on.png";
}
function navOn(navItem) { document.getElementById(navItem).src = eval(navItem + "_on.src"); }
function navOff(navItem) { document.getElementById(navItem).src = eval(navItem + "_off.src"); }