/* common */
function changeImages() {
	for (var i=0; i<changeImages.arguments.length; i+=2) {
		document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
	}
}

/* header */
id = "";
function show_submenu(menu){
	clearTimeout(id);
	with(document){
		if(document.getElementById){
			getElementById('youto').style.visibility = "hidden";
			getElementById('catg').style.visibility = "hidden";
			getElementById('tokusen').style.visibility = "hidden";
			getElementById(menu).style.visibility = "visible";
		}
		else if(document.all){
			all('youto').style.visibility = "hidden";
			all('catg').style.visibility = "hidden";
			all('tokusen').style.visibility = "hidden";
			all(menu).style.visibility = "visible";
		}
	}
}

function hidden_submenu(menu){
	id = setTimeout("hidden_do_submenu('"+menu+"')", 30);
}

function hidden_do_submenu(menu){
	with(document){
		if(document.getElementById){
			getElementById(menu).style.visibility = "hidden";
		}
		else if(document.all){
			all(menu).style.visibility = "hidden";
		}
	}
}

/* left menu */
function openSub(n){
	var dx = document.getElementById('left_menu').getElementsByTagName('div');
	var idname = "budget_"+n;

	if(document.getElementById(idname).style.display == "block"){
		document.getElementById(idname).style.display = "none";
	}
	else{
		document.getElementById(idname).style.display = "block";
	}
}