not sure, i would check the support forums for the flashxml widget.
one thing to try is to edit the colorbox.css, change:
#colorbox, #cboxOverlay, #cboxWrapper {
left: 0;
overflow: hidden;
position: absolute;
top: 0;
z-index: 9999;
}
to:
#colorbox, #cboxOverlay, #cboxWrapper {
left: 0;
overflow: hidden;
position: relative;
top: 0;
z-index: 9999;
}