Html for a paypal button to donate to legaldefence@peacewellington.org:

<form action="https://www.paypal.com/cgi-bin/webscr" method="post">
<input type="hidden" name="cmd" value="_xclick">
<input type="hidden" name="business" value="legaldefence@peacewellington.org">
<input type="hidden" name="item_name" value="Legal Defence">
<input type="hidden" name="buyer_credit_promo_code" value="">
<input type="hidden" name="buyer_credit_product_category" value="">
<input type="hidden" name="buyer_credit_shipping_method" value="">
<input type="hidden" name="buyer_credit_user_address_change" value="">
<input type="hidden" name="no_shipping" value="0">
<input type="hidden" name="no_note" value="1">
<input type="hidden" name="currency_code" value="NZD">
<input type="hidden" name="tax" value="0">
<input type="hidden" name="lc" value="NZ">
<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 - it's fast, free and secure!">
<img alt="" border="0" src="https://www.paypal.com/en_US/i/scr/pixel.gif" width="1" height="1">
</form>