I'm wondering if there are any tools that will validate the text I enter into Movable Type within the New Entry interface.  Ideally, I'd like to type my post, and then before I save/publish it, click a button that would open a popup window and tell me if any validation errors existed in my text.  Does anything like this exist?  If not, is there anyone willing to create a new entry validator?

This would be very nifty!

The best way to reach it is to create all your post based on XML. When I was creating my weblog I've choosed XML/XSLT technology.

All posts goes in XML and displays via XSLT. It's very convenient way. You wins validation and power for your weblog, e.g:

<myemail/><link name="bla bla bal">Test</link>

transforms via XSLT to:

<a href="mailto:desd2345@dotnet.lv" >dES</a><a href="blablabla">Test</a>.

Cool, isn't it?  :p

I posed this same question on webgraphics and have received many good suggestions.

(totally off topic)

Joshua, I didn't know you were the Joshua of WebGraphics.  :)  I love your site, its always got such great info!

Kristine

(also totally off topic)

Thanks Kristine!  Nate, webgraphics founder, recently invited me to join the webgraphics crew.  I'm very happy be part of such a great blog.