Can I use this in a <div> box?

[hudsonz]

I'm probably doing something wrong, but when I put this in any kind of <div> box the calendar appears but doesn't interact with the cursor. No date is pickable and it doesn't highlight the date when the cursor rolls over it.

Is there something basic I should know? I'm somewhat new to this.

If you can't use a <div> how do you position the calendar on the page?