function hilite(name,over) {
	if(window.document.images) {
		if (over)
			window.document.images[name].src = "images/nav_" + name + "-ovr.jpg";
		else
			window.document.images[name].src = "images/nav_" + name + "-off.jpg";
	}
}

var preloaded = new Array();

function preload_images() {
	for (var i = 0; i < arguments.length; i++){
		preloaded[i] = document.createElement('img');
		preloaded[i].setAttribute('src',arguments[i]);
	};
};

preload_images(
	'images/nav_home-off.jpg',
	'images/nav_products-off.jpg',
	'images/nav_news-off.jpg',
	'images/nav_shop-off.jpg',
	'images/nav_history-off.jpg',
	'images/nav_hawaii-off.jpg',
	'images/nav_contact-off.jpg'
);