code: function createObj( str ) {
  		if (!str || str.length == 0) {
  			return window;
  		}
  		var d = str.split("."), j, o = window;
  		for (j = 0; j < d.length; j = j + 1) {
  			o[d[j]] = o[d[j]] || {};
  			o = o[d[j]];
  		}
  		return o;
  	}
docs: Map string to corresponding object.