Please see the code below.
<krpano version="1.0.8" onstart="action(start)">
<!-- text style for startup info -->
<textstyle name="infostyle" origin="top" edge="top" yoffset="20" textalign="center" background="false" border="false" fontsize="40" textcolor="0xFFFFFF" bold="false" effect="glow(0xFFFFFF,0.7,4,2);glow(0x000000,1,4,2);dropshadow(3,45,0x000000,2,0.6);" showtime="1.0" fadetime="1.0" />
<preview type="CUBESTRIP" url="lobby.tiles/preview.jpg" />
<image type="CUBE" multires="true" tilesize="4000">
<level tiledimagewidth="2200" tiledimageheight="2200">
<left url="lobby.tiles/pano_l_%0v%0h.jpg" />
<front url="lobby.tiles/pano_f_%0v%0h.jpg" />
<right url="lobby.tiles/pano_r_%0v%0h.jpg" />
<back url="lobby.tiles/pano_b_%0v%0h.jpg" />
<up url="lobby.tiles/pano_u_%0v%0h.jpg" />
<down url="lobby.tiles/pano_d_%0v%0h.jpg" />
</level>
</image>
<!-- include buttons template (based on the buttons.png image)-->
<include url="buttons-png-include.xml" keep="true" />
<autorotate enabled="true"
waittime="6.0"
accel="1.5"
speed="10"
horizon="0"
tofov="100"
/>
<!-- combobox plugin -->
<plugin name="box" url="http://www.eyecandyvi.com/krpano/plugins/combobox.swf" preload="true"
keep="true"
align="lefttop" x="10" y="10" width="150"
blendmode="layer"
/>
<action name="start">
plugin[box].addIdItem(1, 'Lobby', loadscene(lobby, null, MERGE, BLEND(1)); );
plugin[box].addIdItem(2, 'Room 1', loadscene(room1, null, MERGE, BLEND(1)); );
plugin[box].addIdItem(3, 'Room 2', loadscene(room2, null, MERGE, BLEND(1)); );
plugin[box].addIdItem(4, 'Room 3', loadscene(room3, null, MERGE, BLEND(1)); );
plugin[box].addIdItem(5, 'Room 4', loadscene(room4, null, MERGE, BLEND(1)); );
plugin[box].addIdItem(6, 'Room 5', loadscene(room5, null, MERGE, BLEND(1)); );
plugin[box].addIdItem(7, 'Room 6', loadscene(room6, null, MERGE, BLEND(1)); );
plugin[box].addIdItem(8, 'Room 7', loadscene(room7, null, MERGE, BLEND(1)); );
plugin[box].addIdItem(9, 'Playground - Covered', loadscene(play1, null, MERGE, BLEND(1)); );
plugin[box].addIdItem(10, 'Playground - Open', loadscene(play2, null, MERGE, BLEND(1)); );
<!-- load 1. scene on start -->
loadscene(Lobby, null, MERGE);
</action>
<!-- first scene/pano-->
<scene name="Lobby" onstart="action(startscene);">
<action name="startscene">
plugin[box].selectIdItem(1);
</action>
<view hlookat="30" vlookat="0" fov="100" />
<image type="CUBE" multires="true" tilesize="4000">
<level tiledimagewidth="2200" tiledimageheight="2200">
<left url="lobby.tiles/pano_l_%0v%0h.jpg" />
<front url="lobby.tiles/pano_f_%0v%0h.jpg" />
<right url="lobby.tiles/pano_r_%0v%0h.jpg" />
<back url="lobby.tiles/pano_b_%0v%0h.jpg" />
<up url="lobby.tiles/pano_u_%0v%0h.jpg" />
<down url="lobby.tiles/pano_d_%0v%0h.jpg" />
</level>
</image>
<!-- place here scene local elements like plugins,hotspots, ... -->
<action name="open">
set(plugin[%1].visible,true);
tween(plugin[%1].alpha,1);
</action>
<action name="close">
tween(plugin[%1].alpha,0,0.5,default, set(plugin[%1].visible,false) );
</action>
<plugin name="openimage"
url="imagebox.png"
align="center" x="10" y="10"
alpha="0"
visible="false"
onclick="action(close,get(name));"
/>
<hotspot name="fyi"
url="fyi.png"
ath="0"
atv="0"
scale="0.3"
alpha="0.3"
onover="tween(alpha,1);tween(scale,0.6);"
onout="tween(alpha,0.3);tween(scale,0.3);"
onclick="action(open,openimage);"
/>
<events onloadcomplete="delayedcall(5, hideintroimage() ); set(events.onloadcomplete,null);" />
<plugin name="introimage"
url="introimage.png"
align="center"
onloaded="set(alpha,0); tween(alpha,1.0);"
onclick="hideintroimage();"
/>
<action name="hideintroimage">
if(plugin[introimage].enabled,
set(plugin[introimage].enabled,false);
tween(plugin[introimage].alpha, 0.0, 0.5, default, removeplugin(introimage));
);
</action>
</scene>
<!-- second scene/pano-->
<scene name="Room1" onstart="action(startscene);">
<action name="startscene">
plugin[box].selectIdItem(2);
</action>
<view hlookat="105" vlookat="0" fov="100" />
<image type="CUBE" multires="true" tilesize="4000">
<level tiledimagewidth="2200" tiledimageheight="2200">
<left url="room1.tiles/pano_l_%0v%0h.jpg" />
<front url="room1.tiles/pano_f_%0v%0h.jpg" />
<right url="room1.tiles/pano_r_%0v%0h.jpg" />
<back url="room1.tiles/pano_b_%0v%0h.jpg" />
<up url="room1.tiles/pano_u_%0v%0h.jpg" />
<down url="room1.tiles/pano_d_%0v%0h.jpg" />
</level>
</image>
<!-- place here scene local elements like plugins,hotspots, ... -->
<action name="open">
set(plugin[%1].visible,true);
tween(plugin[%1].alpha,1);
</action>
<action name="close">
tween(plugin[%1].alpha,0,0.5,default, set(plugin[%1].visible,false) );
</action>
<plugin name="openimage"
url="imagebox.png"
align="center" x="10" y="10"
alpha="0"
visible="false"
onclick="action(close,get(name));"
/>
<hotspot name="fyi"
url="fyi.png"
ath="85"
atv="-10"
scale="0.3"
alpha="0.3"
onover="tween(alpha,1);tween(scale,0.6);"
onout="tween(alpha,0.3);tween(scale,0.3);"
onclick="action(open,openimage);"
/>
</scene>
<!-- third scene/pano-->
<scene name="Room2" onstart="action(startscene);">
<action name="startscene">
plugin[box].selectIdItem(3);
</action>
<view hlookat="-110" vlookat="8" fov="100" />
<image type="CUBE" multires="true" tilesize="4000">
<level tiledimagewidth="2200" tiledimageheight="2200">
<left url="room2.tiles/pano_l_%0v%0h.jpg" />
<front url="room2.tiles/pano_f_%0v%0h.jpg" />
<right url="room2.tiles/pano_r_%0v%0h.jpg" />
<back url="room2.tiles/pano_b_%0v%0h.jpg" />
<up url="room2.tiles/pano_u_%0v%0h.jpg" />
<down url="room2.tiles/pano_d_%0v%0h.jpg" />
</level>
</image>
</scene>
<!-- fourth scene/pano-->
<scene name="Room3" onstart="action(startscene);">
<action name="startscene">
plugin[box].selectIdItem(4);
</action>
<view hlookat="-110" vlookat="8" fov="100" />
<image type="CUBE" multires="true" tilesize="4000">
<level tiledimagewidth="2200" tiledimageheight="2200">
<left url="room3.tiles/pano_l_%0v%0h.jpg" />
<front url="room3.tiles/pano_f_%0v%0h.jpg" />
<right url="room3.tiles/pano_r_%0v%0h.jpg" />
<back url="room3.tiles/pano_b_%0v%0h.jpg" />
<up url="room3.tiles/pano_u_%0v%0h.jpg" />
<down url="room3.tiles/pano_d_%0v%0h.jpg" />
</level>
</image>
</scene>
<!-- fifth scene/pano-->
<scene name="Room4" onstart="action(startscene);">
<action name="startscene">
plugin[box].selectIdItem(5);
</action>
<view hlookat="-110" vlookat="8" fov="100" />
<image type="CUBE" multires="true" tilesize="4000">
<level tiledimagewidth="2200" tiledimageheight="2200">
<left url="room4.tiles/pano_l_%0v%0h.jpg" />
<front url="room4.tiles/pano_f_%0v%0h.jpg" />
<right url="room4.tiles/pano_r_%0v%0h.jpg" />
<back url="room4.tiles/pano_b_%0v%0h.jpg" />
<up url="room4.tiles/pano_u_%0v%0h.jpg" />
<down url="room4.tiles/pano_d_%0v%0h.jpg" />
</level>
</image>
</scene>
<!-- sixth scene/pano-->
<scene name="Room5" onstart="action(startscene);">
<action name="startscene">
plugin[box].selectIdItem(6);
</action>
<view hlookat="-110" vlookat="8" fov="100" />
<image type="CUBE" multires="true" tilesize="4000">
<level tiledimagewidth="2200" tiledimageheight="2200">
<left url="room5.tiles/pano_l_%0v%0h.jpg" />
<front url="room5.tiles/pano_f_%0v%0h.jpg" />
<right url="room5.tiles/pano_r_%0v%0h.jpg" />
<back url="room5.tiles/pano_b_%0v%0h.jpg" />
<up url="room5.tiles/pano_u_%0v%0h.jpg" />
<down url="room5.tiles/pano_d_%0v%0h.jpg" />
</level>
</image>
</scene>
<!-- seventh scene/pano-->
<scene name="Room6" onstart="action(startscene);">
<action name="startscene">
plugin[box].selectIdItem(7);
</action>
<view hlookat="-110" vlookat="8" fov="100" />
<image type="CUBE" multires="true" tilesize="4000">
<level tiledimagewidth="2200" tiledimageheight="2200">
<left url="room6.tiles/pano_l_%0v%0h.jpg" />
<front url="room6.tiles/pano_f_%0v%0h.jpg" />
<right url="room6.tiles/pano_r_%0v%0h.jpg" />
<back url="room6.tiles/pano_b_%0v%0h.jpg" />
<up url="room6.tiles/pano_u_%0v%0h.jpg" />
<down url="room6.tiles/pano_d_%0v%0h.jpg" />
</level>
</image>
</scene>
<!-- eighth scene/pano-->
<scene name="Room7" onstart="action(startscene);">
<action name="startscene">
plugin[box].selectIdItem(8);
</action>
<view hlookat="-110" vlookat="8" fov="100" />
<image type="CUBE" multires="true" tilesize="4000">
<level tiledimagewidth="2200" tiledimageheight="2200">
<left url="room7.tiles/pano_l_%0v%0h.jpg" />
<front url="room7.tiles/pano_f_%0v%0h.jpg" />
<right url="room7.tiles/pano_r_%0v%0h.jpg" />
<back url="room7.tiles/pano_b_%0v%0h.jpg" />
<up url="room7.tiles/pano_u_%0v%0h.jpg" />
<down url="room7.tiles/pano_d_%0v%0h.jpg" />
</level>
</image>
</scene>
<!-- ninth scene/pano-->
<scene name="Play1" onstart="action(startscene);">
<action name="startscene">
plugin[box].selectIdItem(9);
</action>
<view hlookat="-41.52" vlookat="-3.8" fov="100" />
<image type="CUBE" multires="true" tilesize="4000">
<level tiledimagewidth="2200" tiledimageheight="2200">
<left url="play1.tiles/pano_l_%0v%0h.jpg" />
<front url="play1.tiles/pano_f_%0v%0h.jpg" />
<right url="play1.tiles/pano_r_%0v%0h.jpg" />
<back url="play1.tiles/pano_b_%0v%0h.jpg" />
<up url="play1.tiles/pano_u_%0v%0h.jpg" />
<down url="play1.tiles/pano_d_%0v%0h.jpg" />
</level>
</image>
</scene>
<!-- tenth scene/pano-->
<scene name="Play2" onstart="action(startscene);">
<action name="startscene">
plugin[box].selectIdItem(10);
</action>
<view hlookat="-4.24" vlookat="-3.8" fov="100" />
<image type="CUBE" multires="true" tilesize="4000">
<level tiledimagewidth="2200" tiledimageheight="2200">
<left url="play2.tiles/pano_l_%0v%0h.jpg" />
<front url="play2.tiles/pano_f_%0v%0h.jpg" />
<right url="play2.tiles/pano_r_%0v%0h.jpg" />
<back url="play2.tiles/pano_b_%0v%0h.jpg" />
<up url="play2.tiles/pano_u_%0v%0h.jpg" />
<down url="play2.tiles/pano_d_%0v%0h.jpg" />
</level>
</image>
</scene>
</krpano>