Scroll Bars appearing in List View

[ChrisOC]

Hello.  I am using SC 2.89 with Mac & PC user on FM11.  I am having an issue with the PC users.  We have a small SC web viewer (65 x 65 px) on a list layout.  When the user first searches for a set of records, the image appears centered in the viewer and is scaled to fit.  

 

However, once they start to scroll through the found set of records, the web viewer changes the display and shows scroll bars with the image at original size.  I have the parameters on the web viewer set to:  "?alignment=center&style=image_only+noscroll+noapplet".  We had originally been using unstirred calc fields on this list view, but that caused a huge performance hit and necessitated our switch to the web viewer.  Any suggestions?