I didn't think it was possible to cancel a PM when send was pressed? The message would still be surely sent even if you were taken back?

Nope. It's possible!

Sending would invoke a PM to appear. Then a message:

'Are you sure you still want to send this message?' ... Yes/No

If no - return false!

Do it then nub

If I still coded for PB, I would!

It's easily possible Wedge.

document.postForm.onsubmit = function(){
if(document.postForm.to && document.postForm.to.value == "admin"){
return confirm("This guy hates you. Do you still want to send the PM?");
}
}

Not tested, but it should work.

Would you want to go through the effort of writing a PM, to find the person you wrote it for doesn't want to receive it when to try and send it? >.>

Then have it appear both times?

Have it appear on the onblur event of the to input

All 3?
Can't you just do it when the person enters 'admin' into the 'To' field?

Yup.

Which would probably be best.

Yep. Which is what Simie was saying. Check the "to" value on page load and then assign an onblur of the same function. Onblur events activate when they click outside of the "to" field (aka it loses focus)

You stopped coding?

PB yes!