So i'm creating a simple PHP / HTML contact form, you know the very generic coding ones. Well I was looking into it more and since my pages on my site open in a main body DIV, I wanted a contact form that, once submitted, will pop up a warning box that simply says "thank you, message received", etc...rather than redirecting to a new thankyou.html page. [that would work fine, but i cant get that thankyou.html page to open in the main DIV, because i dont know how to implement ajax in php....]

So... any help or code on either of those problems would be greatly appreciated. Thanks!

Why don't you just have the contact form POSTING to itself and use a conditional to replace the form with a thankyou.

PHP Code:

<?php if(!$_POST){ 
?>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" 
method="post">
First Name:
<br />
<input type="text" name="firstName">
<br />
Last Name:
<br />
<input type="text" name="lastName">
<br />
Message
<br />
<textarea name="message" cols="20" rows="6"></textarea>
<br /><br />
<input type="submit" name="submit" value="Send">
</form>
<?php } else {

// email script

echo "Thanks, message received"; 
}?>