HTML/CSS/Form Attributes/encoding
"encoding" sets the MIME encoding type
<HTML>
<body onUnload="document.forms[0].reset()">
<form name="form1" method="post" action="" encoding="text/plain">
<p>My Password:
<input type="password" name="textfield" value="15151515"size="20">
<input type="button" name="Submit" value="Submit">
</p>
</form>
</body>
</BODY>
</HTML>