Popup size

Popup size

When viewed with Internet Explorer 8, all my html popups are cut off on the right side ("Close" is only partly visible).
 
I call the popups like this:
 
openUrl("#View:Testview", "popup window");
 
Even a dummy html view like this one doesn't display correctly:
 
htmlpage Testview()
<%{%>
test test test test test test test test test test test test test test test
<%}%>



Thanks for your help.
 
Filip