function changeBigImage(id) {
	var images = document.getElementById('big_image').getElementsByTagName('img');
	for (var i = 0; images[i]; i++) {
		images[i].style.display = (i == id) ? 'inline' : 'none';
	}
}
function showRoute(item, id) {
	var images = item.parentNode.getElementsByTagName('span');
	var routes = document.getElementById('routes').getElementsByTagName('img');
	for (var i = 0; images[i]; i++) {
		images[i].style.backgroundPosition = ((i == id) ? -90 : 0) + 'px -' + (i * 90) + 'px';
		routes[i].style.display = (i == id) ? 'inline' : 'none';
	}
}
window.onload = function () {
	for (var i = 0; i <= 8; i++) {
		document.getElementById('image0' + i).src = 'images/image0' + i + '.jpg';
	}
}