this.plane = this.plane.translate(vector); 
  translate: function(vector) {    var P = vector.elements || vector;    this.vertices.each(function(node) {      var E = node.data.elements;      node.data.setElements([E[0] + P[0], E[1] + P[1], E[2] + (P[2] || 0)]);    });    return this;  },
3123	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/3123/bd0f2fcb88bbd7a7775a929237058fc0fa8ef8db/geometry.src.js/buggy/src/geometry.src.js