I have a popup div that my product manager wants me to place a drop down select box. the problem is that the drop down, when opened, overlaps the popup window's boarder. (See below awful ascii art)

```
____________
|My Popup  |
|  ____    |
| |___V|   |
| |    |   |
|_|    |___|
  |____|

```

As you can see, my product manager wants me to limit the size that the dropdown select's expands so that it does not exist the popup.

Everywhere I have searched, everyone has said this is not possible. Any ideas?