<script>    var arr = new Array;    arr[0] = [ new Option("--请选择市--", "-1") ];    arr[1] = [ new Option("烟台", "6"), new Option("青岛", "2"),            new Option("济南", "1") ];    arr[2] = [ new Option("长沙", "1"), new Option("岳阳", "6") ];    function change(index) {        $(‘city‘).innerHTML = ‘‘;        for (i = 0; i < arr[index].length; i++) {            $(‘city‘).options[i] = arr[index][i];        }    }</script>

<tr>                            <td>所在地区:</td>                            <td>                            <select name="province" style="width:120px;"                                onchange="change(this.selectedIndex);">                                    <option value="-1">--请选择省--</option>                                    <option value="37">山东</option>                                    <option value="43">湖南</option>                            </select>                             <select id="city" name="city" style="width:120px;">                                    <option value="-1">--请选择市--</option>                            </select>                            </td></tr>