补地logo

<!--补地logo-->
<events name="nadirlogorotation" keep="true" onviewchange="if(hotspot[nadirlogo].rotatewithview, set(hotspot[nadirlogo].rotate,get(view.hlookat)) );" />
<hotspot name="nadirlogo" url="krpano-roundlogo.png" keep="true" 
ath="0" atv="90" distorted="true" scale="1.0" rotate="0.0" 
rotatewithview="false" onclick="switch(rotatewithview); invalidatescreen();" />