function mouseover(menu) {
	for (i=1;i<=5;i++) {
		var obj_name = "submenu"+i;
		var targetObject = document.all(obj_name);
		if (targetObject) {
			if (obj_name == "sub"+menu) {
				targetObject.style.cssText = "display:visible";
			} else {
				targetObject.style.cssText = "display:none";
			}
		}
	}
	var targetMenu = document.all(menu);
	if (targetMenu) {
		targetMenu.style.cssText = "position:relative;left:2px;top:2px;background-color:#6699dd;cursor:hand";
	}
}

function mouseout(menu) {
	var targetObject = document.all(menu);
	if (targetObject) {
		targetObject.style.cssText = "none";
	}
}

function menuOn(no) {
	document.getElementById('menu'+no).style.cssText = 'background-color:#ccaa56'
}

function menuOff(no) {
	if(no == 8) {
		document.getElementById('menu'+no).style.cssText = 'background-color:#c19d38;border-right:none'
	} else {
		document.getElementById('menu'+no).style.cssText = 'background-color:#c19d38'
	}
}

function checkLoginData(form) {
	if (form.id.value == '') {
		alert('Please insert ID!');
		form.id.focus();
		return;
	}
	if (form.pw.value == '') {
		alert('Please insert passowrd!');
		form.pw.focus();
		return;
	}
	form.submit();
}