Thank you so much !!
But when I use your solution , there is a problem that
zoomHome = 1.4
zoomMax = 2
ZoomMin = 1
they are not effective anymore ，I don't know how to modify Zoomhome value
Here is my xml :
<panorama>
<parameters>
layer_10 = pano/files/glassMeter.swf
layer_1 = pano/files/hotspots.swf
layer_2 = pano/files/fps.swf
layer_3 = pano/files/limits.swf
layer_4 = pano/files/autorotator.swf
layer_8 = pano/files/menuFullscreen.swf
disableLoading = 1
<!--//
panoType = cube
panoName = pano/images/ec/ec
//-->
loaderStreamed = 1
loaderBandwidth = 0
loaderConsecutive = 0
zoomHome = 1.4
zoomMax = 2
ZoomMin = 1
qualityMotion = low
qualityStatic = best
</parameters>
<hotspots>
<global onStart="external.autorotator.disabled=1"
onEnterFullscreen="
tay_mickey.visible=0;
fullscreen.visible=0;
logo.staticX=5,500;
"
onExitFullscreen="
tay_mickey.visible=1;
fullscreen.visible=1;
logo.staticX=110,500;
"
onStart="loadPreview();" loadPreview=" loadPano(?panoName=pano/images/ec/ecs,300); onTransitionEnd=loadMain(); pano.qualityStatic=low "
loadMain=" loadPano(?panoName=pano/images/ec/ec,600); onTransitionEnd= "
>
<spot id="tay_mickey" static="1" salign="LT" align="LT" staticX="0" staticY="0" url="images/bean_05.png"/>
<spot id="fullscreen" static="1" salign="lb" align="lb" staticX="20" staticY="-20" alpha="0.6" url="images/maximise.png"
onClick="fullscreen()"
onOver="alpha=1,150"
onOut="alpha=0.6,200"
/>
</global>
</hotspots>
<limits>
pan_min = ""
pan_max = ""
tilt_min = -60
tilt_max = 55
</limits>
</panorama>