var SEPARATION = 100, AMOUNTX = 50, AMOUNTY = 50;
  var container;
  var camera, scene, renderer;
  var particles, particle, count = 0;
  var mouseX = 0, mouseY = 0;
  var windowHalfX = window.innerWidth / 2;
  var windowHalfY = window.innerHeight / 2;
  init();
  animate();
  function init() {
    container = document.createElement('div');
    document.getElementById("lz_id").appendChild(container);
    camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 1, 20000);
    camera.position.z = 2000;
    scene = new THREE.Scene();
    particles = new Array();
    var PI2 = Math.PI * 2;
    var material = new THREE.ParticleCanvasMaterial({
      color: 0xd5dbde,
      program: function (context) {
        context.beginPath();
        context.arc(0, 0, 1, 0, PI2, true);
        context.fill();
      }
    });
    var i = 0;
    for (var ix = 0; ix < AMOUNTX; ix++) {
      for (var iy = 0; iy < AMOUNTY; iy++) {
        particle = particles[i++] = new THREE.Particle(material);
        particle.position.x = ix * SEPARATION - ((AMOUNTX * SEPARATION) / 2);
        particle.position.z = iy * SEPARATION - ((AMOUNTY * SEPARATION) / 2);
        scene.add(particle);
      }
    }
    renderer = new THREE.CanvasRenderer();
    renderer.setSize(window.innerWidth, window.innerHeight);
    container.appendChild(renderer.domElement);
    window.addEventListener('resize', onWindowResize, false);
  }

  function onWindowResize() {
    windowHalfX = window.innerWidth / 2;
    windowHalfY = window.innerHeight / 2;
    camera.aspect = window.innerWidth / window.innerHeight;
    camera.updateProjectionMatrix();
    renderer.setSize(window.innerWidth, window.innerHeight);
  }

  function onDocumentMouseMove(event) {
    mouseX = event.clientX - windowHalfX;
    mouseY = event.clientY - windowHalfY;
  }

  function onDocumentTouchStart(event) {
    if (event.touches.length === 1) {
      event.preventDefault();
      mouseX = event.touches[0].pageX - windowHalfX;
      mouseY = event.touches[0].pageY - windowHalfY;
    }
  }

  function onDocumentTouchMove(event) {
    if (event.touches.length === 1) {
      event.preventDefault();
      mouseX = event.touches[0].pageX - windowHalfX;
      mouseY = event.touches[0].pageY - windowHalfY;
    }
  }

  function animate() {
    requestAnimationFrame(animate);
    render();
  }
  function render() {
    camera.position.x += (camera.position.x) * .05;
    camera.position.y += (200 - camera.position.y) * .05;
    camera.lookAt(scene.position);
    var i = 0;
    for (var ix = 0; ix < AMOUNTX; ix++) {
      for (var iy = 0; iy < AMOUNTY; iy++) {
        particle = particles[i++];
        particle.position.y = (Math.sin((ix + count) * 0.3) * 50) + (Math.sin((iy + count) * 0.5) * 50);
        particle.scale.x = particle.scale.y = (Math.sin((ix + count) * 0.3) + 1) * 2 + (Math.sin((iy + count) * 0.5) + 1) * 2;
      }
    }
    renderer.render(scene, camera);
    count += 0.1;
  }