[paypal]{EMAIL}[/paypal]

tml]'\\[paypal\\]([._A-z0-9-]+@[A-z0-9-]+\.[.a-z]+)\\[/paypal\\]' => '<form action="https://www.paypal.com/cgi-bin/webscr" method="post">

<input type="hidden" name="cmd" value="_donations">

<input type="hidden" name="business" value="\\1">

<input type="hidden" name="item_name" value="Donation">

<input type="hidden" name="item_number" value="DONATION">

<input type="hidden" name="no_shipping" value="0">

<input type="hidden" name="no_note" value="1">

<input type="hidden" name="currency_code" value="USD">

<input type="hidden" name="tax" value="0">

<input type="hidden" name="lc" value="US">

<input type="hidden" name="bn" value="PP-DonationsBF">

<input type="image" src="https://www.paypal.com/en_US/i/btn/x-click-but21.gif" border="0" name="submit" alt="Make payments with PayPal - its fast, free and secure!"><img alt="" border="0" src="https://www.paypal.com/en_US/i/scr/pixel.gif" width="110" height="23"><div><input type="hidden" id="x" name="x" value="33A6EE" /></div></form>',

    [paypal]kaan@ntka.org[/paypal]