function validate(form)
{
    if (form.username)
	{
		if (form.username.value == '')
		{
			alert('Please enter a Username.');
			return false;
		}
		
		if (form.username.value.length > 10)
		{
			alert('Username can be no more than 10 characters.  Please enter a Username.');
			return false;
		}
	} 
	
    if (form.password)
	{
		if (form.password.value == '')
		{
			alert('Please enter a Password.');
			return false;
		}
		
		if (form.password.value.length > 10)
		{
			alert('Password can be no more than 10 characters.  Please enter a Password.');
			return false;
		}
	}    
}