function dtv_info(id,action) {
	if (action=='set') {
		for (i=1; i<=3; i++) {
			$('#dtv_hardware_'+i).removeClass('active');
			$('#dtv_info_'+i).addClass('nodisplay');
		}
		$('#dtv_hardware_'+id).addClass('active');
		$('#dtv_info_'+id).removeClass('nodisplay');
	} else if (action=='on') {
		$('#dtv_hardware_'+id).addClass('hover');
	} else if (action=='off') {
		$('#dtv_hardware_'+id).removeClass('hover');
	}
}