"Display cart after adding product" issue nop 1.9

Hi,
In order to enable our clients to navigate faster, I disabled the "Display cart after adding product" option
in Configuration>Global Settings>Products in version 1.9.
But now I get a small window after each item added to the shopping-chart, kindly informing
the user about this fact. You can see a screendump here:

http://www.loco-digilab.net/img/nop_p_added.jpg

Is this a configuration-issue, or supposed to work like this?
In the latter case, where could I start to replace this window by somethink more in style?

Thank you very much

in the code behind for any page whicj displays a buy button you could comment out


                        else
                        {
                            //display notification message
                            this.DisplayAlertMessage(GetLocaleResourceString("Products.ProductHasBeenAddedToTheCart"));
                        }

Exactly what I needed. Thank you very much!