Código HTML:
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<form name="form1" method="post" action="doform.php">
<input type="text" name="textfield">
<input type="submit" name="Submit" value="Submit">
</form>
<p> </p>
<form name="form2" method="post" action="doform.php">
<input type="text" name="textfield">
<input type="submit" name="Submit2" value="Submit">
</form>
<p> </p>
<form name="form3" method="post" action="doform.php">
<input type="text" name="textfield">
<input type="submit" name="Submit3" value="Submit">
</form>
<p> </p>
</body>
</html>