Foren / Unrelated / Offtopic / Working Search On Index?

<h2>{PHP.L.Search}</h2>
	<form id="search" name="search" action="plug.php?e=search" method="post">
		<input type="hidden" name="a" value="search" />
		<input type="text" name="sq" value="" maxlength="40" />
		<input type="submit" value="{PHP.L.Search}" />
		<p class="small"><a href="plug.php?e=search">Advanced search</a></p>
	</form>