CAPTCHA not validating?
Sorry - I'll have (not) done something stupid again, but I've retraced my steps a few times now, but the form on this page is submitting with blank or incorrect CAPTCHA codes.
I've attached a copy.
the action of the form is to post to another page:
<form style="margin-bottom:0;" action="http://www.changedetection.com/detect.html"
all form processing must occur on the forms action page. Since this form posts to another page on another server, and it is also an HTML page, you wont be able to use captcha with this form.