// JavaScript Document
var current_id="default";
function showItem(id) {
	var prev_obj = document.getElementById("item_"+current_id);
	var obj = document.getElementById("item_"+id);
	if (prev_obj) {
		prev_obj.style.display = "none";
	}
	if (obj) {
		obj.style.display = "block";
		current_id = id;
	}
}