My page has some jscript menus and flash that are not related to radwindow.  
when i add a code to open a window it does not open the width i want properly.  in some other cases it hides my flash ??  when i add the same code in a blank aspx page it works perfectly.    somehow my existing code is affecting or creating a conflict.

is there a way to isolate code?

Hello giancarlo,

To be able to help we need to have more information about the exact problems that you experience.
Please open a support ticket and send us the following:

1. Sample project where these problems can be reproduced. Make sure that the project can be run locally.
2. Reproduction steps / screenshots of the problem
3. Detailed description / edited screenshots of the desired behavior.

Once we receive that, we will do our best to help.

Regards,
Georgi Tunev
the Telerik team