Untitled

data:text/html,
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8" />
    <title>Submit Form</title>
</head>
<body onload="document.forms['my_form'].submit()">
<form action="http://www.search-engine.com/target-page.php" method="post" id="my_form">
    <input name="part_number" type="hidden" value="39845" />
</form>
</body>
</html>