您需要添加引号。

您的代码将输出：

DepartmentSelect(Deli)

而是这样做：

<SCRIPT LANGUAGE='javascript'>
DepartmentSelect('<?=$row["rDepartment"];?>');
</SCRIPT>

尝试：

<SCRIPT LANGUAGE='javascript'>
DepartmentSelect(<?php echo $row[rDepartment]; ?>);
</SCRIPT>

或者：

<SCRIPT LANGUAGE='javascript'>
DepartmentSelect(<?php echo $row["rDepartment"]; ?>);
</SCRIPT>