if ( res.type == 'obj/mtl' ) {
				var mtlLoader = new THREE.MTLLoader();
				var objLoader = new THREE.OBJLoader();
				//load the mtl
				var rsn = resnames
				var idx = i
        //This returns a function to upload each resource
				var functor = function ( idx, name ) {
					return function ( materials ) {
						materials.preload();
						materials.side = THREE.DoubleSide;
						//Set the material to the object loader of the object
						objLoader.setMaterials( materials );

						//Save the materials in the storage object
						__T.resourceStorage[ resnames[ idx ] ].materials = materials;
            //Folder path
						objLoader.setPath( __T.resourcePath );
						objLoader.load( name + '.obj', function ( object ) {

              //There are problems sometimes when prototype is group and not object 3d
							var tmp = new THREE.Object3D()
							object.__proto__ = tmp.__proto__;

              //Only needed if you need textures on both sides
							if ( object instanceof THREE.Object3D ) {
								object.traverse( function ( mesh ) {
									if ( !( mesh instanceof THREE.Mesh ) ) return;
									console.log( mesh.material );
									mesh.material.side = THREE.DoubleSide;
								} );
							}

							__T.resourceStorage[ rsn[ idx ] ].object = object;
							__T.resourceStorage[ rsn[ idx ] ].loaded = true;
              //Calls a function that manages when all resources are loaded every resource calls it.
							checkResources();

						} );
					}
				}

				mtlLoader.load( __T.resourcePath + name + '.mtl', functor( idx, name ) );
			}