I'm trying to add borders to the middle column in a three column row. This:

```
var subcount = $j('#sub > div').size();

```

Gives me 6, and I'm trying to figure out how to apply a style to the divs in the middle? (in this case, div 2 and div 5)

```
<div id="sub">
<div>div 1</div> <div>div 2</div> <div>div3</div>
<div>div 4</div> <div>div 5</div> <div>div6</div>
</div>

```

Is there a way to do that based on the div # and not the id? Like, some sort of foreach loop or something?