//login switches //

function to_signup() {
	document.getElementById('login').style.display='none';
	document.getElementById('signin').style.display='';
	document.getElementById('login_footer').style.display='none';
	document.getElementById('signin_footer').style.display='';
	document.getElementById('signin_uid').focus();
}

function close_recommended_env() {
	document.getElementById('lower_border_top').style.backgroundImage='url(./img/login_lower_bg_border_top.gif)';
	document.getElementById('lower').style.display='';
	document.getElementById('lower_hw0').style.display='none';
	document.getElementById('f_recommendation').className='linked2hw';
}

function toggle_recommended_env() {
	if (document.getElementById('lower_hw0').style.display=='none') {
		close_releasenote();
		document.getElementById('lower_border_top').style.backgroundImage='none';
		document.getElementById('lower').style.display='none';
		document.getElementById('lower_hw0').style.display='';
		document.getElementById('f_recommendation').className='f_recommendation_hil';
	} else {
		document.getElementById('lower_border_top').style.backgroundImage='url(./img/login_lower_bg_border_top.gif)';
		document.getElementById('lower').style.display='';
		document.getElementById('lower_hw0').style.display='none';
		document.getElementById('f_recommendation').className='linked2hw';
	}
}


function close_releasenote() {
	document.getElementById('lower_border_top').style.backgroundImage='url(./img/login_lower_bg_border_top.gif)';
	document.getElementById('lower').style.display='';
	document.getElementById('lower_hw1').style.display='none';
	document.getElementById('f_releasenote').className='linked2hw';
}

function toggle_releasenote() {
	if (document.getElementById('lower_hw1').style.display=='none') {
		close_recommended_env();
		document.getElementById('lower_border_top').style.backgroundImage='none';
		document.getElementById('lower').style.display='none';
		document.getElementById('lower_hw1').style.display='';
		document.getElementById('f_releasenote').className='f_releasenote_hil';
	} else {
		document.getElementById('lower_border_top').style.backgroundImage='url(./img/login_lower_bg_border_top.gif)';
		document.getElementById('lower').style.display='';
		document.getElementById('lower_hw1').style.display='none';
		document.getElementById('f_releasenote').className='linked2hw';
	}
}


function show_login_error_message() {
	document.getElementById('login_passwd').value='';
	alert('ユーザIDとパスワードが一致しません。もう一度やり直してください。');
}