<form action="https://solidtrustpay.com/handle.php" method="post">
<input type=hidden name="merchantAccount" value="xxxxxxx" />
<input type="hidden" name="sci_name" value='yyyyyyyyyy'>
Amount: <input type=text name="amount" /> <br >
<input type=hidden name="currency" value="USD" />
<input type=hidden name="item_id" value="user id: 78915" />
<input type=image name="cartImage" src="https://solidtrustpay.com/ImgDir/buttons/buynow1.gif" />
</form>