<form name="formalbum" action="simpan-album.php" method="post">  
Bulan: <select type="text" name="id_bulan">
<option value="1">January</option>
<option value="2">Feburari</option>
<option value="3">Maret</option>
<option value="4">April</option>
<option value="5">Mei</option>
<option value="6">Juni</option>
<option value="7">Juli</option>
<!-- option bulan lainnya silahkan buat sendiri -->
</select>
<table id="tabel-lagu" cellspacing="0" border="1" cellpadding="3">  
    <tr>  
        <td>id_raker</td>  
        <td>nilai</td>  
        <td>Delete</td>  
    </tr>  
    <tr>  
        <td><input type="text" name="id_raker[0]"/></td>  
        <td><input type="text" name="nilai[0]"/></td>  
        <td><button type="button" class="del">Del</button></td>  
    </tr>  
    <tr id="last">  
        <td colspan="4" align="right"><button type="button" id="addRow">Add</button></td>  
    </tr>  
</table>  
<input type="submit" value="Simpan"/>  
</form>  
<script type="text/javascript" src=" https://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js"></script>  
<script type="text/javascript">  
var i = 1;  
$(function(){  
    $("#addRow").click(function(){  
        row = '<tr>'+  
        '<td><input type="text" name="id_raker['+i+']"/></td>'+  
        '<td><input type="text" name="nilai['+i+']"/></td>'+  
        '<td><button type="button" class="del">Del</button></td>'+  
        '</tr>';  
        $(row).insertBefore("#last");  
        i++;  
        });  
    });  
    $(".del").live('click', function(){  
        $(this).parent().parent().remove();  
        });  
</script>  

if($_POST){
	$idBulan = $_POST['id_bulan'];
	foreach($_POST['id_raker'] as $key => $idRaker){
		$nilai = $_POST['nilai'][$key];
		$sql = "insert into Detail_Raker (id_raker,nilai,id_bulan) 
			values ('$idRaker','$nilai','$idBulan')";
		mysql_query($sql);
	}
}

if($_POST){
	$idBulan = $_POST['id_bulan'];
	$sqlCek = "select * from Detail_Raker where id_bulan='$idBulan'";
	if(mysql_number_rows(mysql_query($sqlCek)) <= 0){
		foreach($_POST['id_raker'] as $key => $idRaker){
			$nilai = $_POST['nilai'][$key];
			$sql = "insert into Detail_Raker (id_raker,nilai,id_bulan) 
				values ('$idRaker','$nilai','$idBulan')";
			mysql_query($sql);
		}
	}
}