1.0.9 has a new area feature. first action is run onstart and sets the area for the pano images. i called it test cause i was testing :) second is the code for the grey box. all the plugins inside are set with parent="controls" i use % instead of pixels so it scales correctly on different monitors.
<action name="test">
set(area.x, 40%);
set(area.y, 5%);
set(area.width, 55%);
set(area.height, 90%);
action(texton,data:start));
</action>
<plugin name="controls" url="controls.png" handcursor="false"
align="topleft" edge="topleft"
x="5%"
y="65%"
alpha="1"
zorder="10"
onhover=""
onout=""
height="30%"
width="35%"
parent="stage"
keep="true"
/>