Hiya Dave,
The error message you get in DreamWeaver (which doesn't necessarily show when viewing page in Browser) - "This document contains javascript code for a widget that no longer exists etc." refers to the Spry validation javascript widgets between the <script> tags near the bottom of your page code
At the moment in your page at (contact.php), you have five lines of code for (what should be) five Spry validation fields in your form:
<script type="text/javascript">
<!--
var Contact_me_group_Name_Spry = new Spry.Widget.ValidationTextField("Contact_me_group_Name_Spry", "none",{validateOn:["blur"]});
var Contact_me_group_Email_Spry = new Spry.Widget.ValidationTextField("Contact_me_group_Email_Spry", "email",{validateOn:["blur"]});
var Contact_me_group_Comments_Spry = new Spry.Widget.ValidationTextarea("Contact_me_group_Comments_Spry",{validateOn:["blur"]});
var Contact_me_group_Security_code_Spry = new Spry.Widget.ValidationTextField("Contact_me_group_Security_code_Spry", "none",{validateOn:["blur"]});
var Contact_me_group_nbsp_Spry = new Spry.Widget.ValidationTextField("Contact_me_group_nbsp_Spry", "none",{validateOn:["blur"]});
//-->
</script>
but you only have three fields in your form that are currently being Spry validated, i.e. only three have a Spry <span id="somename_Spry> </span> that is matched with a javascript widget line at the bottom of your page.
In your form, at the moment, the fields you are validating with Spry are the Name, Email and Security code (captcha) fields.
<span id="Contact_me_group_Name_Spry">
<span id="Contact_me_group_Email_Spry">
<span id="Contact_me_group_Security_code_Spry">
For now, the lines shown in gray in the javascript widget lines above (3rd & 5th) should be removed. You can easily add Spry validation to any other element later if you want to.
I can't make out all the errors in that last image, but they're surely not for live the page you link to are they, (hopefully)?
If you could post a copy of the latest page you're working on, we should be able to identify what the error messages are referring to.