Web Dynpro - Message Dialog Problem

Hi,

I have this case here:

I'd created a confirmation message dialog which will pops up for the user to click "Ok". However, when the user had clicked "Ok", the message dialog will then dissappear. However, I found that the "shadow" or "frame" (With dotted lines) of that dialog box still appears. and it will follows wherever i scroll the page to.

Is there any way that i can make this dissapear?

The version that i am using is :

SAP NetWeaver Developer Studio

Version: 2.0.9

Build id: 200410190321

Thank you very much