เขียนโค้ด php+jquery mobile ถ้าข้อมูลตรงตามเงื่อนไขให้ ติ้กถูกใน checkbox แต่ตอนนี้มันไม่ติ้กไห้

<title>ไฟ</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.2.1/jquery.mobile-1.2.1.min.css" />
    <script src="http://code.jquery.com/jquery-1.8.3.min.js"></script>
    <script src="http://code.jquery.com/mobile/1.2.1/jquery.mobile-1.2.1.min.js"></script>
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
	<script src="js/jquery.screwdefaultbuttonsV2.js"></script>
	<script type="text/javascript">
		$(function(){
		$('input:radio').screwDefaultButtons({
		image: 'url("images/radioSmall.jpg")',
		width: 20,
		height: 1
		});
		 
		});
    </script>
	<script language="JavaScript">
     function dis()
    {
        var Rows = document.form1.count.value;
        for(x=1;x<=Rows;x++)
        {
                var bill1 = document.getElementById("bill"+x+"_1");
                var bill2 = document.getElementById("bill"+x+"_2");
                var bill3 = document.getElementById("bill"+x+"_3");
                
                var jing1 = document.getElementById("jing"+x+"_1");
                var jing2 = document.getElementById("jing"+x+"_2");
                var jing3 = document.getElementById("jing"+x+"_3");
                
                var error = document.getElementById("error"+x+"_1");		
                
         if(bill1.checked == true && jing3.checked==true)
               {
                error.checked=true;
               }
        else if(bill1.checked == true && jing1.checked==true)		
               {
                error.checked=false;
               }
        else if(bill2.checked == true && jing2.checked==true)		
               {
                error.checked=false;
               }
        else if(bill1.checked == true && jing2.checked==true)		
               {
                error.checked=false;
               }
        else if(bill3.checked == true && jing1.checked==true)		
               {
                error.checked=false;
               }
        else if(bill2.checked == true && jing3.checked==true)		
               {
                error.checked=true;
               }
        else if(bill3.checked == true && jing3.checked==true)		
               {
                error.checked=true;
               }
        }
    }
    </script>
	
</head> 
<form action="save_chkmotor.php" method="post" name="form1"> 
<div data-role="page">
   <div data-role="content" data-theme="d">	
        <table width="63%">
        <tr align="center">
           <td width="4%">#</td>
           <td width="13%">รายการตรวจสภาพ</td>
           <td width="20%">ตามใบตรวจสภาพ</td>
           <td width="20%">ตามที่ตรวจจริง</td>
           <td width="6%">รายการผิดลพาด</td>
        </tr>
		<?
           include "connect.php";
		   $strSQL   = "SELECT * FROM spare_store
                         WHERE			 
                         brand_id   = '".$_GET["bID"]."'  AND
                         class_id   = '".$_GET["cID"]."'  
                         ORDER BY idno ASC";
            $objQuery = mysql_query($strSQL) or die ("Error Query [".$strSQL."]");
			$count    = mysql_num_rows($objQuery);
			$x=0;
            while($objResult = mysql_fetch_array($objQuery))
            {
                $x++;
				$sp_code   = $objResult["sp_code"];
				$sp_name   = $objResult["sp_name"];
				$price     = $objResult["price"];
				$brand     = $objResult["brand_id"];
				$class     = $objResult["class_id"];
        ?>
        <tr align="center">
        	<td><?=$x;?>.</td>
            <td align="left"><?=$sp_name?></td>
            <input name="strno" type="hidden" value="<?=$_GET["mID"];?>" />
            <input name="sp_code[<?=$x;?>]" type="hidden" value="<?=$sp_code;?>" />
            <input name="sp_name[<?=$x;?>]" type="hidden" value="<?=$sp_name;?>" />
            <input name="price[<?=$x;?>]"   type="hidden" value="<?=$price;?>" />
            <td>
                <div data-role="fieldcontain">
                    <fieldset data-role="controlgroup" data-type="horizontal" >
                            <input type="radio" name="bill[<?=$x;?>]" id="bill<?=$x;?>_1" value="1"  onclick="dis()"/>
                            <label for="bill<?=$x;?>_1">ใช้ได้</label>
                
                            <input type="radio" name="bill[<?=$x;?>]" id="bill<?=$x;?>_2" value="2"  onclick="dis()"/>
                            <label for="bill<?=$x;?>_2">ชำรุด</label>
                
                            <input type="radio" name="bill[<?=$x;?>]" id="bill<?=$x;?>_3" value="3"  onclick="dis()"/>
                            <label for="bill<?=$x;?>_3">ไม่มี</label>
                    </fieldset>
                </div>            
           </td>
           <td>
                <div data-role="fieldcontain">
                    <fieldset data-role="controlgroup" data-type="horizontal" >
                            <input type="radio" name="jing[<?=$x;?>]" id="jing<?=$x;?>_1" value="1" onclick="dis()"/>
                            <label for="jing<?=$x;?>_1">ใช้ได้</label>
                
                            <input type="radio" name="jing[<?=$x;?>]" id="jing<?=$x;?>_2" value="2"  onclick="dis()"/>
                            <label for="jing<?=$x;?>_2">ชำรุด</label>
                
                            <input type="radio" name="jing[<?=$x;?>]" id="jing<?=$x;?>_3" value="3"  onclick="dis()"/>
                            <label for="jing<?=$x;?>_3">ไม่มี</label>
                    </fieldset>
                </div>            
           </td>
           <td> 
            <input type="checkbox" name="error[<?=$x;?>]" id="error<?=$x;?>_1" value="1" onclick="dis()" />
            <label for="error<?=$x;?>_1">ผิดพลาด</label>
           </td>
        </tr>
        <? } ?>
        <tr>
        	<td colspan="5">
            	<input type="hidden" name="count" value="<?=$x;?>" />
            	<input type="submit" id="submit" value="บันทึกข้อมูล"  data-role="button" data-inline="true" data-theme="b"/>
            </td>
        </tr>
        </table>
        </div>
</div>
</form>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<?
include "connect.php";
$sp_id 		 = $_POST["sp_id"];
$error 		 = $_POST["error"];
$count 		 = $_POST["count"];
$strno 	     = $_POST["strno"];
$spe_id        = $_POST["spe_id"];
$sp_code 	   = $_POST["sp_code"];
$sp_name 	   = $_POST["sp_name"];
$drive 		 = $_POST["drive"];
$bill 		  = $_POST["bill"];
$jing 		  = $_POST["jing"];
$error         = $_POST["error"]; 
$price         = $_POST["price"]; 
$brand     	 = $_POST["brand"]; 
$class     	 = $_POST["class"]; 
$type          = $_POST["type"]; 
$userid        = $_POST["emp_no"]; 
for($x=1;$x<=$count;$x++)
{
		if($x != "")
		{			
			echo $srtno;
			echo "<br>";
			echo $sp_name[$x];
			echo "<br>";
			echo $sp_name[$x];
			echo "<br>";
			echo $bill[$x];
			echo "<br>";
			echo $jing[$x];
			echo "<br>";
			echo $error[$x];
			echo "<br>";
			echo $price[$x];
		}
}

?>