Index of /apis/XMLHttpRequest/getResponseHeader

 Name                    Last modified      Size  Description
 Parent Directory                             -   
 support/                21-Sep-2006 10:18    -   
 001.htm                 22-Jun-2007 18:17  482   getting getResponseHeader before readyState is 3
 002.htm                 22-Jun-2007 18:17  1.2K  getResponseHeader(): case-insensitive matching
 003.htm                 22-Jun-2007 18:17  837   getResponseHeader should not include CRLF in returned string
 004.htm                 22-Jun-2007 18:17  861   getResponseHeader(): Content-Type test
 005.htm                 22-Jun-2007 18:17  1.0K  getResponseHeader(): Server and Date header
 006.htm                 22-Jun-2007 18:17  865   getResponseHeader(): non-existent header
 007.htm                 25-Feb-2008 17:06  846   invoking getResponseHeader() before readyState is LOADING
 008.htm                 26-Jun-2007 10:17  646   getResponseHeader(): network error (infinite redirects)
 009.htm                 07-Mar-2008 23:46  1.0K  getResponseHeader(): invalid token

All aspects of getResponseHeader() for XMLHttpRequest level 1 are covered
here I think.