handle time.com, and scrolling article page

final version
In general, split the xpath so it's not that long. You can do something like
```
var authors = ZU.xpathText(articles[i], '(header[@class="article-header"])[1]\
	//ul[@class="article-authors"]/li[@class="article-author"]/span[@class="byline"]/a');
```
But in this case, can't you just do `authors = articles[i].getElementsByClassName('byline')[0];`?