function FullScreen(a){this._obj=a}FullScreen.prototype.can=function(){return !!(document.fullscreenEnabled||document.mozFullScreenEnabled||document.msFullscreenEnabled||document.webkitSupportsFullscreen||document.webkitFullscreenEnabled)};FullScreen.prototype.is=function(){return !!(document.fullScreen||document.webkitIsFullScreen||document.mozFullScreen||document.msFullscreenElement||document.fullscreenElement)};FullScreen.prototype.setData=function(a){this._obj.setAttribute("data-fullscreen",!!a)};FullScreen.prototype.exit=function(){if(!this.is()){return}if(document.exitFullscreen){document.exitFullscreen()}else{if(document.mozCancelFullScreen){document.mozCancelFullScreen()}else{if(document.webkitCancelFullScreen){document.webkitCancelFullScreen()}else{if(document.msExitFullscreen){document.msExitFullscreen()}}}}this.setData(false)};