title: Three.js import obj and mtl with OBJMTLLoader
body: <p>I have a dog.max model, I export it to dog.obj and dog.mtl by 3dmax, and I use them in my three.js project like this:</p>
  
  <pre><code>var loader = new THREE.OBJMTLLoader();
  loader.load( '2/dog.obj', '2/dog.mtl', function ( obj ) {
      alert( "1" );
      mesh = obj; 
      obj.position.set( 0, 0, -10 );
      scene.add( obj ); 
      mesh.position.set( 0, 0, -600 );
  } );
  </code></pre>
  
  <p>but when I open it in my service (tomcat7.0), firefox said the script has no response. Is the model too complex for the browser to work with them?</p>