<!--
function check_login()
{
	var alert_text = "Please enter your ";
	var flag;
	
	if (login_form.username.value.length == 0)
	{
		flag = true;
		alert_text += "email address";
		login_form.username.focus();
	}
	if (login_form.pswd.value.length == 0)
	{
		if (flag)
		{
			alert_text += " and ";
		}
		else
		{
			login_form.pswd.focus();
		}
		flag = true;		
		alert_text += "password";
	}
	
	alert_text += " to login.";
	
	if (flag)
	{
		alert(alert_text);
		
		return false;
	}
	
	return true;
}
-->