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function cameraOn(ip) {
	var timeout = 1500;
  var img = new Image();

  img.onload = success;
  img.onerror = fail;
    
  img.src = "http://" + ip + "/image/brickcom_logo.gif";

  // Time out 
  var timer = setTimeout(fail, timeout);
  
  function cleanup() {
  	window.clearTimeout(timer);
  	img.src = null;
  }
  function success() {
  	cleanup();
		console.log('sucess');
	}
	function fail() {
		cleanup();
		console.log('fail');
	}
}


function pingIt(ip) {
	this.isCameraOn = null;

  if(!this.inUse) {

    this.inUse = true;
    this.ip = ip;

    var _that = this;

    this.img = new Image();

    this.img.onload = function() {good();};
    this.img.onerror = function() {bad();};

    this.start = new Date().getTime();
    this.img.src = "http://" + ip + "/image/brickcom_logo.gif";
    this.timer = setTimeout(function() {bad();}, 1500);

  }

  function cleanup() {
  	this.inUse = true;
  	window.clearTimeout(this.timer);
  	this.img.src = null;
  }
  function good() {
  	this.isCameraOn = true;
		console.log('sucess ');
		cleanup();
	}
	function bad() {
		this.isCameraOn = false;
		console.log('fail');
		cleanup();
	}

}