My question pertains specifically to the two pages below, but is also more generally relating to methods for using clean URLs without an .htaccess file.
http://www.decitectural.com/ and http://www.decitectural.com/about/
The pages above are hosted on Amazon's S3, which does not allow for the use of htaccess files. As a result, I have found no easy way to create a clean url rewrite scheme that sends all requests to an index file which, in turn, interprets the URL using javascript and loads up the correct page (with AJAX, or, as is the case with decitectural, with simple div visibility toggling).
In order to circumvent this problem, I usually edit the amazon S3 bucket properties and set both the index page and the error page to the index.html file. In this case, the index.html file is served even when an invalid path (such as /about/) is requested. This has, for the most part, been a functioning solution... That is, until I realized that I was also getting a 404 with the index.html page which would stop Google from indexing it.
This has led me to seek out an alternative solution to this problem. Currently, as a temporary fix, I am actually creating the /about/ directory on the server with a duplicate of the index.html file in it. This works, but obviously is not a real solution to the problem.
I would appreciate any advice on how to set up a clean URL routing scheme on S3 or in any instance where an .htaccess file can't be used.