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";
	}
	document.getElementById("tab_" + current_id).className = "tab_unselect";
	if(obj){
		obj.style.display = "block";
		current_id = id;
	}
	document.getElementById("tab_" + id).className = "tab_select";
}
var current_item_id="item_default";
function ShowItemDetail(id){
	var prev_obj = document.getElementById("item_" + current_item_id);
	var obj = document.getElementById("item_" + id);
	if(prev_obj){
		prev_obj.style.display = "none";
	}
	document.getElementById("tab_" + current_item_id).className = "tab_unselect_item";
	if(obj){
		obj.style.display = "block";
		current_item_id = id;
	}
	document.getElementById("tab_" + id).className = "tab_select_item";
}