--- collection.cgi.orig	2010-04-06 21:07:57.000000000 +0200
+++ collection.cgi	2010-04-06 21:08:18.000000000 +0200
@@ -877,8 +877,16 @@ HTML
 
 sub print_header
 {
+  # hack for IE to accept XHTML with text/html MIME-Type
+  if ($ENV{'HTTP_ACCEPT'} !~ m/application\/xhtml+xml/)
+  {
+    print "Content-Type: text/html; charset=utf-8\r\n";
+  }
+  else
+  {
+    print "Content-Type: application/xhtml+xml; charset=utf-8\r\n";
+  }
   print <<HEAD;
-Content-Type: application/xhtml+xml; charset=utf-8
 Cache-Control: no-cache
 
 <?xml version="1.0" encoding="utf-8"?>