#pxp-control-button{position:fixed;top:30;right:30;display:block;text-indent:-9999px;background:url(../images/bulb.png) no-repeat 0 0;width:48px;height:48px;z-index:1000;}
#pxp-control-button.off{background:url(../images/bulb-off.png) no-repeat 0 0;}