29. The method of claim 26 , wherein the interpreter program is received over a network from an external source.
26. A method performed at a computing device to execute an application written in a program language that is not natively supported by a voice browser, the method comprising: parsing a VXML document by the voice browser; detecting a statement in the VXML document referencing an interpreter program; receiving, at the voice browser, an interpreter program which interprets the program language that is not natively supported by the voice browser; loading a program written in the program language for execution at the voice browser.