织梦导航不显示外部链接栏目，修改channelartlist标签方法

1	$tpsql = " reid=0 AND ispart<>2 AND ishidden<>1 AND channeltype>0 ";

1	$tpsql = " reid=0 AND ishidden<>1 AND channeltype>0 ";

1	$pv->Fields['typeurl'] = GetOneTypeUrlA($typeids[$i]);

1	if($typeids[$i]['ispart'] == 2){2	3	$pv->Fields['typeurl'] = $pv->Fields['typeurl'].'" target="_blank';4	}