function validate()
{	
	if ( document.getElementById("username").value == "" || document.getElementById("password").value == "" )
	{
		alert("Please complete both username and \npassword fields before trying to login.");
	}
	else document.getElementById("loginForm").submit();
}

function handleKeyPress( key )
{
	key = key.keyCode || key.which;	
	
	if ( key == 13 )  validate();
}