Mine

<form id="chat" method="post" name="chat" action="<?php echo $_SERVER['PHP_SELF']; ?>">
	<div>
		<label>Say: <input id="chat-say" type="text" name="say" size="30" maxlength="150"></label>
		<input type="submit" name="submit" class="button" value="Say">
		<a href="javascript:window.parent.location='logout.php';">Exit</a>
	</div>
</form>