pilih barang combobox

pilihbarangcombobox.php

<option selected="selected">---Pilih Barang--</option>
								<?php
								
								while ($row = mysqli_fetch_array($result)){
									echo '<option value="' . $row['nama'] . '">' . $row['nama'] . ' </option>';
									$jsArray .= "NamaBarang['" . $row['nama'] . "'] = {merk:'" . addslashes($row['merk']). "',
									satuan:'" . addslashes($row['satuan']). "', jumlah:'" . addslashes($row['jumlah']). "',
									foto:'" . addslashes($row['foto']). "'};\n";  	
								}
								
															
								?>	
							</select>	
						</div>
						
						<script type="text/javascript">  
								<?php echo $jsArray; ?>
								function changeValue(id){
								//document.getElementById('nama').value = NamaBarang[id].nama;
								document.getElementById('merk').value = NamaBarang[id].merk;
								document.getElementById('satuan').value = NamaBarang[id].satuan;
								document.getElementById('jumlah').value = NamaBarang[id].jumlah;
								document.getElementById('foto').value = NamaBarang[id].foto;
								
								
								};
							</script>
					
															
						<div class="form-group">
							<label>Merk</label>
							<input name="merk" type="text" class="form-control" id="merk" disabled>
							
						</div>