/**
 * Creates a namespace.
 *
 * @return
 *   The created namespace object.
 */
function namespace () {
  var a=arguments, o=null, i, j, d;
  for (i=0; i<a.length; i=i+1) {
    d=a[i].split(".");
    o=window;
    for (j=0; j<d.length; j=j+1) {
      o[d[j]]=o[d[j]] || {};
      o=o[d[j]];
    }
  }
  return o;
};