Problem with "Page Scroller" (aka Custom Scrollbar)

[chrbar]

1) Script Title:
Page Scroller (aka Custom Scrollbar)

2) Script URL (on DD):
http://www.dynamicdrive.com/dynamicindex2/pagescroller.htm

3) Describe problem:

Hello,
I use this script to replace Iframe scrollbar.
I've copied all code of this script on the Iframe page (page.html).

<iframe id="contentframe" src="page.html" scrolling="no" marginwidth="0" marginheight="0" frameborder="0" vspace="0" hspace="0" style="width:100%; height:350px"></iframe>

All is fine, but the scroll of the Iframe doesn't stop at the end of the page ("page.html").
At the end of the Iframe page, if I leave the mouse on the GoDown Button, the scroll continu to run... and the iframe becomes a blank page.

The problem is present on IE, FF and Safari.
The problem is always present if I keep the Iframe Scrollbar (scrolling="yes").
The problem could be to use Iframe with this script!

Did you have the same problem with this script?
If yes, did you solve it?

Thanks,
Chris