php组合highcharts和Ajax获取数据失败

php结合highcharts和Ajax获取数据失败

效果图如上，但是我只完成了下面那个表格那块，上面的走势图弄不出来，我是分别Ajax来获取了（走势图和表格分开的）；本来是想用一个文件来完成，但是失败了

下面放上文件：
主文件

<?php
require ('inc/config.php');
$page_title = '各区域住宅成交情况-feige数据中心';
include ('inc/header.php');
require (MYSQL);
?>
<p class="portlet wrap mT50">
	<p class="portlet-title">各区域住宅成交情况</p>
	<p class="portlet-body">
	<form action="zhuzhai.php" method="post">
    	<p class="datePickerBlock">
        区域
			<select id="city" name="city" class="select-city">
				<?php 
				$q = "SELECT city_id, city_name FROM f_city ORDER BY city_id ASC";		
				$r = mysqli_query ($conn, $q) or trigger_error("Query: $qn<br />MySQL Error: " . mysqli_error($conn));
				if (@mysqli_num_rows($r) > 0) {
					while ($row = mysqli_fetch_array ($r, MYSQLI_NUM)) {
						echo "<option value="$row[0]">$row[1]</option>n";
					}
					mysqli_free_result ($r);
				} else {
					echo '<option>暂无区域，请添加一个新地区</option>';
				}
				mysqli_close($conn);
				?>
			</select>     
        自定义时间范围
        <input id="start_time" name="start_time" class="hasDatePicker" onClick="WdatePicker()" type="text" size="16" value="" />至<input id="end_time" name="end_time" class="hasDatePicker" onClick="WdatePicker()" type="text" size="16" value="" />
        <input class="btn" type="submit" id="submit" value="查询" />
        </p>
	</form>	
	
	

	<p id="container" style="min-width:800px;height:400px;margin:10px 0;"></p>
        <table id="datatable" class="tableStyle">
        <thead>
            <tr>
                <th></th>
                <th>成交面积</th>
                <th>成交套数（套）</th>                
            </tr>
         </thead>
         <tbody>
            <tr>
                <td>2014-08-15</td>
                <td>222</td>
                <td>16670</td>
            </tr>
            <tr>
                <td>2014-08-16</td>
                <td>7167.07</td>
                <td>621</td>               
            </tr>
            <tr>
                <td>2014-08-17</td>
                <td>71660.07</td>
                <td>62</td>              
            </tr>
            <tr>
                <td>2014-08-18</td>
                <td>21</td>
                <td>716</td>
            </tr>
        </tbody>
        </table>