Fixed ScrollArea without border node.
Fixed ScrollArea without border node.

svn path=/trunk/libavg/; revision=9104

th3infinity/libavg,hoodie/libavg,libavg/libavg,scotty007/libavg,libavg/libavg,libavg/libavg,yyd01245/libavg,yyd01245/libavg,libavg/libavg,th3infinity/libavg,yyd01245/libavg,scotty007/libavg,scotty007/libavg,hoodie/libavg,yyd01245/libavg,th3infinity/libavg,hoodie/libavg,scotty007/libavg,hoodie/libavg,th3infinity/libavg