Sources: ASP – http://support.microsoft.com/kb/311006/en-us PHP – http://www.php.net/manual/en/function.header.php ColdFusion – http://www.bpurcell.org/blog/index.cfm?entry=1075&mode=entry JSP – http://www.jguru.com/faq/view.jsp?EID=377&page=2