function treeMenu(oName) {
	var tName = oName;
	var tMenu = document.getElementById(tName).style;
	if(tMenu.display == 'none'){
		tMenu.display = "block";
		document.images['img_' + tName].src = "/common/arrow_open.gif";
	}
	else{
		tMenu.display = "none";
		document.images['img_' + tName].src = "/common/arrow_close.gif";
		
		//蟄舌ヮ繝ｼ繝峨ｂ繧ｯ繝ｭ繝ｼ繧ｺ縺吶ｋ
		while(checkName(tName = tName + "_1")){
			tmp_tName = tName.slice(0, -1);
			var i = 1;
			while(checkName(tmp_tName + i)){
				tMenu = document.getElementById(tName).style;
				tMenu.display = "none";
				document.images['img_' + tmp_tName + i].src = "/common/arrow_close.gif";
				i++;
			}
		}
	}
}

//蜷榊燕縺九ｉ隕∫ｴ 縺悟ｭ伜惠縺吶ｋ縺九メ繧ｧ繝�け
function checkName(tName){
	if(document.getElementById(tName) != null){
		return true;
	}
	else{
		return false;
	}
}