fadein bei iOS klappt nicht

<hotspot name="Gang" devices="all" style="Shinergy-Pfeil-rechts"
	     	url="hotspots/Shinergy-Pfeil-rechts-70-58px.png"
	     	keep="false"
	     	ath="224.31510387134654" atv="28.076626650564478"
	     	zoom="false" distorted="false" details="8" flying="0"
	     	width="58" height="70"
	     	scale="1" scale9grid="" scalechildren="false" rotate="0"
	     	rx="0" ry="0" rz="0"
	     	edge="center" ox="" oy=""
	     	crop="" ondowncrop="" onovercrop=""
	     	visible="true" enabled="true" usecontentsize="false" handcursor="true" capture="true" children="true" maskchildren="false"
 	     	zorder="0"
	     	alpha="0.7" autoalpha="false" blendmode="normal" effect="" smoothing="true" pixelhittest="false"
	     	refreshrate="auto"
	     	onhover="showtext(' Lichthof Gang ',hotspottextstyle);set(alpha,1.0);"
	     	onout="set(alpha,0.7);"
	     	onclick="lookto(-127.17,14.64,90,smooth(100,50,20)); 			
			 		zoomto(40,smooth(5));fadeoutandload('scene_Shinergy-Panorama-E-Business-Fotografie-Wien');
					wait(1);
					oninterrupt(break);
					wait(3);
					lookto(-359.99,7.76,90, smooth(45,45,60), false);"
	     	/>

<krpano version="1.0.8.14" onstart="startup();">
<!-- plugins 
	<plugin name="editor" url="plugins/editor.swf" keep="true" />
	<plugin name="options" url="plugins/options.swf" keep="true" />  
	<plugin name="marker" url="plugins/target.png" align="center" keep="true" />	
 -->
<action name="fadein">
		tween(plugin[soundinterface].volume,0.2,1);
</action>
<action name="fadeout">
		tween(plugin[soundinterface].volume,0.0,1);
</action>
<action name="startmusic">
		playsound(bgmusic, %SWFPATH%/music/fluid.mp3, 0);
</action>
<action name="startmusic-zwei">
		playsound(bgmusic-zwei, %SWFPATH%/music/waterstep.mp3, 0);
</action>
<action name="startmusic-drei">
		playsound(bgmusic-drei, %SWFPATH%/music/spacebound.mp3, 0);
		preloadsound(%SWFPATH%/music/spacebound.mp3);
</action>
<action name="soundstop">
			stopallsounds();
		</action>
<action name="fadeoutandload">
<!-- %1 = Szenenname -->
		tween(plugin[soundinterface].volume, 0.0,1,,
   		stopallsounds();
<!-- lade Szene -->
   		loadscene(%1, null, MERGE, BLEND(1) );
);
</action>


<plugin name="soundinterface"
			url="plugins/soundinterface.swf"
			alturl="plugins/soundinterface.js"
			preload="true"
			keep="true"
			volume="0.2"
			/>