THREE.Matrix3 = function () {

	this.m = [];

};

THREE.Matrix3.prototype = {

	transpose: function () {

		var tmp, m = this.m;

		tmp = m[1]; m[1] = m[3]; m[3] = tmp;
		tmp = m[2]; m[2] = m[6]; m[6] = tmp;
		tmp = m[5]; m[5] = m[7]; m[7] = tmp;

		return this;

	}

};