Quite involved in web design myself and can only agree with Howard and Lisa. A Wordpress blog, a Facebook page, a Twitter account - all free and relatively easy to use, and definitely more valuable for actually getting people involved in something like this. I doubt many people will venture beyond the first page of that new site. The effort is admirable, but I can't help but feel it's probably wasted energy, wrestling with what looks like an archaic website builder.
A single page with the carnival logo, a bit about the committee, a few photos, and a link to Twitter and Facebook (where all those old photos and posters could be uploaded into albums within seconds) would be enough.
Having said that, I'm surprised The Marple Website itself doesn't post updates to either of those.