<form style="text-align:center;" id="paypalform" action="https://www.paypal.com/cgi-bin/webscr" method="POST">
    <input type='hidden' name='cmd' value='_xclick'>
    <input type='hidden' name='business' value='payment@xxx.com'>
    <input type='hidden' name='item_name' value='201001114262121'>
    <input type='hidden' name='amount' id="amount" value='1.00'>
    <input type='hidden' name='currency_code' value='CAD'>
    <input type='hidden' name='return' value='http://www.xxx.com/paypal_process.php'>
    <input type='hidden' name='invoice' value='82'>
    <input type='hidden' name='charset' value='utf-8'>
    <input type='hidden' name='no_shipping' value='1'>
    <input type='hidden' name='no_note' value=''>
    <input type='hidden' name='notify_url' value='http://www.xxx.com/return.php'>
    <input type='hidden' name='rm' value='82'>
    <input type='hidden' name='cancel_return' value='http://www.xxx.com/index.html'>
</form>

Herkes bilir?