Menyembunyikan data table, dan data akan muncul jika melakukan pencarian.

hallo assalamualaikum, mau bertanya gimana yah caranya atau harus pakek apa supaya data di table itu kosong dan data muncul di table ketika melakukan pencarian terlebih dahulu.

<?php
	include 'config.php';
?>

<form action="index.php" method="get">
	<label>Cari :</label>
	<input type="text" name="cari">
	<input type="submit" value="Cari">
</form>
<?php
	if(isset($_GET['cari'])){
		$cari = $_GET['cari'];
		echo "<b>Hasil pencarian : ".$cari."</b>";
	}
?>
<table border="1">
	<tr>
		<th>No</th>
		<th>Nama</th>
		<th>jurusan</th>
		<th>semester</th>
	</tr>
<?php
	if(isset($_GET['cari'])){
		$cari = $_GET['cari'];
		$data = mysql_query("select * from mhs where nama like '%".$cari."%' or jurusan like '%".$cari."%'  or semester like '%".$cari."%'");
	}
	else{
		$data = mysql_query("select * from mhs");
	}
	$no = 1;
	while($d = mysql_fetch_array($data)){
?>
	<tr>
		<td><?php echo $no++; ?></td>
		<td><?php echo $d['nama']; ?></td>
		<td><?php echo $d['jurusan']; ?></td>
		<td><?php echo $d['semester']; ?></td>
	</tr>
<?php
	}
?>
</table>