title: three.js - How can I dynamically change object's opacity?
body: <p>This is my object:</p>
  
  <pre><code>var object = new THREE.Mesh( geometry, new THREE.MeshLambertMaterial( { map: THREE.ImageUtils.loadTexture( "image.png" ) } ) );
  object.position.set(2, 3, 1.5);
  </code></pre>
  
  <p>now after I've created this object in init(); function, I can directly go to the object and change his position,like this:</p>
  
  <pre><code>object.position.x = 15;
  </code></pre>
  
  <p>Now the question is how can I change the opacity of the texture???</p>
  
  <p>Thanks :-)</p>