function DeviceMotionSender(){if(!this.isIOS_()){return}window.addEventListener("devicemotion",this.onDeviceMotion_.bind(this),false);this.iframes=document.querySelectorAll("iframe.vrview")}DeviceMotionSender.prototype.onDeviceMotion_=function(e){var message={type:"DeviceMotion",deviceMotionEvent:this.cloneDeviceMotionEvent_(e)};for(var i=0;i<this.iframes.length;i++){var iframe=this.iframes[i];var iframeWindow=iframe.contentWindow;if(this.isCrossDomainIframe_(iframe)){iframeWindow.postMessage(message,"*")}}};DeviceMotionSender.prototype.cloneDeviceMotionEvent_=function(e){return{acceleration:{x:e.acceleration.x,y:e.acceleration.y,z:e.acceleration.z},accelerationIncludingGravity:{x:e.accelerationIncludingGravity.x,y:e.accelerationIncludingGravity.y,z:e.accelerationIncludingGravity.z},rotationRate:{alpha:e.rotationRate.alpha,beta:e.rotationRate.beta,gamma:e.rotationRate.gamma},interval:e.interval}};DeviceMotionSender.prototype.isIOS_=function(){return/iPad|iPhone|iPod/.test(navigator.userAgent)&&!window.MSStream};DeviceMotionSender.prototype.isCrossDomainIframe_=function(iframe){var html=null;try{var doc=iframe.contentDocument||iframe.contentWindow.document;html=doc.body.innerHTML}catch(err){}return html===null};var dms=new DeviceMotionSender;