repeat texture

repeat texture
/////////////
        // create the ground plane
        var planeGeometry = new THREE.PlaneGeometry(2000, 2000);
        var map = new THREE.ImageUtils.loadTexture( 'assets/img/wood.jpg' );
        map.wrapS = map.wrapT = THREE.RepeatWrapping;
        map.repeat.set( 4, 4);
        var planeMaterial = new THREE.MeshLambertMaterial({color: 0xffffff,map:map , transparent: true }); //side:THREE.BackSide
        var plane = new THREE.Mesh(planeGeometry, planeMaterial);
        plane.receiveShadow = true;
        // rotate and position the plane
        plane.rotation.x = -0.5 * Math.PI;
        plane.position.x = 0;
        plane.position.y = -2;
        plane.position.z = 0;
        scene.add(plane);