ขอความช่วยเหลือหน่อยครับเรื่อง การดึงค่าจากดรอปดาวต่อๆกันครับ

<script language = "JavaScript">


		//**** List Ar (Start) ***//
		function ListAr(SelectValue)
		{
			frmMain.ddlAr.length = 0
			

			//*** Insert null Default Value ***//
			var myOption = new Option('','')  
			frmMain.ddlAr.options[frmMain.ddlAr.length]= myOption
			
			<?php
			$intRows = 0;
			$strSQL = "SELECT * FROM clamant ORDER BY clamant_id ";
			$objQuery = mysql_query($strSQL) or die ("Error Query [".$strSQL."]");
			$intRows = 0;
			while($objResult = mysql_fetch_array($objQuery))
			{
			$intRows++;
			?>
				x = <?php echo $intRows;?>;
				mySubList = new Array();
				
				strGroup = "<?php echo $objResult["policestation_id"];?>";
				strValue = "<?php echo $objResult["clamant_id"];?>";
				strItem = "<?php echo $objResult["clamant_id"];?>";
				mySubList[x,0] = strItem;
				mySubList[x,1] = strGroup;
				mySubList[x,2] = strValue;
							
				if (mySubList[x,1] == SelectValue){
					var myOption = new Option(mySubList[x,0], mySubList[x,2])  
					frmMain.ddlAr.options[frmMain.ddlAr.length]= myOption					
				}

				

			<?php
			}
			?>
		}
		//**** List Ar (End) ***//
	
</script>

<form name="frmMain" action="" method="post">
	สภ. 
	<select id="ddlPstation" name="ddlPstation" onChange = "ListAr(this.value)" class="form-control">
	<option selected value=""></option>
	<?php
	$strSQL = "SELECT * FROM policestation ORDER BY policestation_name ASC ";
	$objQuery = mysql_query($strSQL) or die ("Error Query [".$strSQL."]");
	while($objResult = mysql_fetch_array($objQuery))
	{
	?>
	<option value="<?php echo $objResult["policestation_id"];?>"><?php echo $objResult["policestation_name"];?></option>
	<?php
	}
	?>
	</select>


	รหัสเจ้าหน้าที่
	<select id="ddlAr" name="ddlAr" style="width:200px" class="form-control" onchange="document.getElementById('target').innerHTML=this.value"></select>

	

	<label id="target">Wait Select Change</label>


</form>