Perhaps you can adapt the CF Akismet implementation.

http://devnulled.com/cfakismet

On 3/16/07, Peter Boughton <[EMAIL PROTECTED]> wrote:
>
> It'll work in a sense of being able to set the action with JS is entirely
> possible.
>
> It wont work in the sense of being inaccessible (anyone without JS cannot
> use the site).
>
> It also wont work for any spam bots that can run JS (eg: any that use a
> browser to render their content.)
>
>
> >I got to thinking about the DOM and started wondering if providing the
> >form's action value programmatically with JavaScript would protect
> >against Spam bots trying to submit trash to the action page.
> >
> >Something like this:
> ><script type="text/javascript">
> >document.forms.myform.action = "http://mydomain.com/someactionpage.cfm";;
> ></script>
> >
> >What do you think? I'm sure it has been tried, right? Does it work?
> >
> >-Aaron
>
> 

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