// tree表示
function LeftMenu(tName)
{
	tMenu = document.getElementById(tName).style;
	if (tMenu.display == 'none') tMenu.display = "block"; else tMenu.display = "none";
}


// arrow.gifの切り替え
function arrowchange(param)
{
	num = 0;
	if (document.getElementById('myIMG'+param).src.indexOf("0") > 0) {
		num = 1;
	}
	document.getElementById('myIMG'+param).src = "http://www.oracle.co.jp/common/image/menu"+num+".jpg";
}