function validatelogin()
{
	// check username
	if (document.forms[0].elements[0].value == "")
	{
	alert ("Please enter your Username.");
	return false;
	}
// check message length
	if (document.forms[0].elements[1].value == "")
	{
	alert ("Please enter your password.");
	return false;
	}
	return true;
}