PopUp Calendar with dhtml modal window

[Pats2KDynasty]

1) Script Title: popcalendar.js

2) Script URL (on DD): http://www.dynamicdrive.com/dynamici...opcalendar.htm

3) Describe problem: The error I am getting is "document.ppcMonthList.sItem is null or not an object". I have inserted the .js in my scripts folder and included the src ref in my ascx. I have also included the document.writein stuff at the bottom. The only thing I can think of is that it is a modal dhtml window (http://www.dynamicdrive.com/dynamici...dhtmlmodal.htm) opening an ascx user control or maybe that I am trying to fill an asp:textbox could be the problem.

SO IS THERE ANY WAY TO OPEN A CALENDAR POP-UP INSIDE A DHTML MODAL WINDOW? ...AND IF SO HOW?

Thank you in advance.

[Pats2KDynasty]

Anyone?