function login_show()
{
//	document.body.style.overflow = 'hidden';
	location.href = '#';
	document.getElementById('login_popup').style.display = document.getElementById('grey').style.display = 'block';
	document.getElementById('grey').style.height = (document.body.scrollHeight + (navigator.userAgent.indexOf("MSIE") != -1 ? 12 : 0)) + 'px';
}

function login_hide()
{
//	document.body.style.overflow = 'auto';
	document.getElementById('login_popup').style.display = document.getElementById('grey').style.display = 'none';
}