Scrollbnar on tab appears only when modal window is created

I have a bug I can not seem to fix.



I have a main page that launches a modal window containing a tabbar with multiple tabs. When in the second tab, you have a toolbar with a single button that launches a new modal window allowing you to add a new record.



I can not seem to remove the scroll bars from the first modal window when the second modal window is launched.



They only appear when the second modal window is launched.



I have tried using overflow:hidden by adding it to the dhtmlx stylesheet but this doesnt seem to work.



Any ideas would be most appreciated.



Please see the attached picture to clarify the issue.





Cheers





Scott

Please, provide the complete demo to reproduce the issue (you can send it to support@dhtmlx.com).