Rails spinoffs - May 2006 - Accept header

Hello,

I''d want set an Accept header different from the default one: 
''text/javascript, text/html, application/xml, text/xml, */*''.

Then I set in options:
{
   ...
   requestHeaders: [''Accept'', 
''text/xml;q=1,application/xml,text/javascript,text/html''],
   ...
}

In this way the internal requestHeaders array in Ajax.Request will have 
two values for the Accept key. This works fine in mozilla/firefox 
because the second one is picked.
Unfortunately in Internet Explorer the two values are merged producing 
something like:
''text/javascript, text/html, application/xml, text/xml, */*, 
text/xml;q=1,application/xml,text/javascript,text/html''
and this causes me some problems.

Consequently I slightly modify prototype.js setting the default Accept 
header only if it isn''t in the options requestHeaders array.
This works for me but I wonder if there is a better way, especially a 
way that doesn''t require to change prototype.js.

Please, could somebody give me some advice about this? Thanks in advance.
-- 
Nicola Piccinini -- http://superfluo.org