Scheduler in Chrome and Firefox

I’m trying out dhtmlxScheduler Ver. 2.2, and I’m running into a problem.
I use Visual Studio 2010 with C#. When my scheduler is taller that the page height, and I scroll down to make a new event using double click (or drag), using Firefox and Chrome I get the wrong time (and dragging shows the new event as I drag in the wrong time slot). It seems it does not take into account the amount of scrolling of the page. In Internet Explorer and Opera 10 it works perfectly.
Am I doing something wrong? (I didn’t find any bug report on this, so I assume it’s working).

Thanks
Fabio

Do you have a scroll on the document, or on some element inside it?

Code of scheduler makes correction for the scroll of document, but if you have some nested scrollable container - it may cause problems.

Also, which version of FF you are using?
( in code, position detection in FF uses native functionality of browser, while IE uses more complex calculation, it possible that significantly old version of FF may differ in behavior )

Sorry for not having replied earlier… I have been way TOO busy. The problem was a css for the body, which made overflow in which the scheduler was embedded. Having removed the overflow tag made it work nicely. Thank you for pointing me in the right direction