function keypressCB(field,e)
{
	var keycode;
	if (window.event)
		keycode = window.event.keyCode;
	else if (e)
		keycode = e.which;
	else
		return true;

	if (keycode == 13 && field.value != '')
	{
		var i = 0;
		var found = 0;
		while( i < field.form.length && !found )
		{
			if( field.form[i].type == 'text' || field.form[i].type == 'password' )
			{
				if( field.form[i].value == '' )
				{
					field.form[i].focus();
					found = 1;
				}
			}
			i = i + 1;
		}

		if( !found )
		{
			field.form.submit();
		}
		return false;
	}
	else
		return true;
}