Multi Column Menu – breaking a list

Hi everyone!

I was hoping to find some direction with a menu issue I’m having.

What I’m trying to do is create a menu that has no more than three levels.

I need the dropdowns to be no more than a list of 5 long… Like this:

Button 1 Child 1 Grandchild 1 Grandchild 6
Button 2 Child 2 Grandchild 2 Grandchild 7
Button 3 Child 3 Grandchild 3 Grandchild 8
Button 4 Child 4 Grandchild 4
Button 5 Child 5 Grandchild 5

So I was wondering if it’s possible to say something in the PHP that says the equivalent of:

<div class=”grandchild-col”>
List child pages 1 – 5
</div>
<div class=”grandchild-col”>
List Child Pages 6 – 10
</div>

Something along the lines of that.

If anyone out there has any suggestions that would be fantastic!

Thanks! ??