function over(link){
	var imgs = link.getElementsByTagName("IMG");
	switch(link.id) {
		case "item1":
			imgs[0].src="/@/img/homeup.jpg";
		break;
		case "item2":
			imgs[0].src="/@/img/mapup.jpg";
		break;
		case "item3":
			imgs[0].src="/@/img/mailup.jpg";
		break;		
	}
}

function out(link){
	var imgs = link.getElementsByTagName("IMG");
	switch(link.id) {
		case "item1":
			imgs[0].src="/@/img/homedown.jpg";
		break;
		case "item2":
			imgs[0].src="/@/img/mapdown.jpg";
		break;
		case "item3":
			imgs[0].src="/@/img/maildown.jpg";
		break;		
	}
}