Ah, good.

Do you want to post how you did it for future searchers please?

Well... i couldn't for the life of me get the code working by inserting the html directly into the editor... it just kept stripping the values no matter what i tried. I actually didn't get as far as to test this method in FF. I went with the original content() script because it was the only way i could get it to work both IE and FF. I used the below code:

function Content() {
	$content = $this->Content;
	$content = str_replace('$PayPal1', $this->PayPal1(), $content);
	$content = str_replace('$PayPal3', $this->PayPal2(), $content);
	$content = str_replace('$PayPal4', $this->PayPal4(), $content);
	$content = str_replace('$PayPal5', $this->PayPal5(), $content);
	$content = str_replace('$PayPal6', $this->PayPal6(), $content);
	return $content;
	}

function PayPalRecreation() { 
	return '<form action="https://www.paypal.com/cgi-bin/webscr" method="post">
	<input type="hidden" name="cmd" value="_s-xclick">
	<input type="hidden" name="hosted_button_id" value="??????">
	<input type="image" src="https://www.paypal.com/en_US/i/btn/btn_paynow_SM.gif" border="0" name="submit" alt="">
	<img alt="" border="0" src="https://www.paypal.com/en_US/i/scr/pixel.gif" width="1" height="1">
	</form>';
	} 

So all that is in the content editor is $PayPal1 etc. It seems to be working all ok. :)