// JavaScript Document

function view(id){
	if(document.getElementById){
		document.getElementById("navi2").style.display = "none";
		document.getElementById("navi3").style.display = "none";
		document.getElementById("navi4").style.display = "none";
		document.getElementById(id).style.display = "block";
	}
}
function cLose(){
	document.getElementById("navi2").style.display = "none";
	document.getElementById("navi3").style.display = "none";
	document.getElementById("navi4").style.display = "none";
	document.getElementById("n2_a").className = "nv";
	document.getElementById("n3_a").className = "nv";
	document.getElementById("n4_a").className = "nv";
}

//プルダウン表示時に“親”も反転
function on2(){
		document.getElementById("n2_a").className = "nv a_on";
}
function on3(){
		document.getElementById("n3_a").className = "nv a_on";
}
function on4(){
		document.getElementById("n4_a").className = "nv a_on";
}