Looking at the HTTP headers that the server sends when requesting the page http://www.avis.com/car-rental/avisHome/home.ac , I have:
HTTP/1.1 200 OK Server: Sun-ONE-Web-Server/6.1 Content-Type: text/html; charset=ISO8859_1 Cache-Control: cache Content-Language: en-US X-Powered-By: Servlet/2.4 JSP/2.0 Vary: Accept-Encoding Content-Encoding: gzip Date: Mon, 05 Apr 2010 12:00:54 GMT Content-Length: 19701 Connection: keep-alive
So this is not like Python; more like some Java / JSP stuff.
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