รบกวนช่วยดูโค้ดให้หน่อยครับ dependent dropdown list ค่าไม่เข้าครับ

<section id="main" class="column">
		
		<h4 class="alert_info">Welcome to Maintain Employee Form</h4>
			<script language="javascript">
			function ListDepartment(SelectValue)
			{
				$bin = SelectValue
				alert($bin);
				frmMain.ddlDep.length = 0
				frmMain.ddlSec.length = 0

				//*** Insert null Default Value ***//
				//var myOption = new Option('','')  
				var myOption = new Option('')
				frmMain.ddlDep.options[frmMain.ddlDep.length]= myOption
				
				<?php
				$strSQL = "SELECT * FROM Department ORDER BY division_id,department_id ASC ";
				$objQuery = mysql_query($strSQL) or die ("Error Query [".$strSQL."]");
				$intRows = 0;
				while($objResult = mysql_fetch_array($objQuery))
				{
					$intRows++;
				?>
					x = <?php echo $intRows;?>;
					mySubList = new Array();
					str1 = <?php echo $objResult["division_id"];?>;
					str2 = "<?php echo $objResult["department_id"];?> - <?php echo $objResult["department_name"];?>";
					mySubList[x,0] = str2;
					mySubList[x,1] = str1;
					if (mySubList[x,1] == SelectValue){
						var myOption = new Option(mySubList[x,0])
						frmMain.ddlDep.options[frmMain.ddlDep.length]= myOption
						frmMain.ddlDep.value[frmMain.ddlDep.length]= myOption
					}
				<?php
				}
				?>																	
			}
			function ListSection(SelectValue)
			{
				$bin2 = SelectValue
				alert($bin2);
				frmMain.ddlSec.length = 0
				//*** Insert null Default Value ***//
				//var myOption = new Option('','')  
				var myOption = new Option('')
				frmMain.ddlSec.options[frmMain.ddlSec.length]= myOption
				
				<?php
				$strSQL = "SELECT * FROM section ORDER BY department_id,section_id ASC ";
				$objQuery = mysql_query($strSQL) or die ("Error Query [".$strSQL."]");
				$intRows = 0;
				while($objResult = mysql_fetch_array($objQuery))
				{
					$intRows++;
				?>
					x = <?php echo $intRows;?>;
					mySubList = new Array();
					str1 = <?php echo $objResult["department_id"];?>;
					str2 = "<?php echo $objResult["section_id"];?> - <?php echo $objResult["section_name"];?>";
					mySubList[x,0] = str2;
					mySubList[x,1] = str1;
					if (mySubList[x,1] == SelectValue){
						var myOption = new Option(mySubList[x,0])
						frmMain.ddlSec.options[frmMain.ddlSec.length]= myOption
					}
				<?php
				}
				?>																	
			}
			function ListEditDepartment(SelectValue)
			{
				frmMain.ddlDep2.length = 0

				//*** Insert null Default Value ***//
				//var myOption = new Option('','')  
				var myOption = new Option('')
				frmMain.ddlDep2.options[frmMain.ddlDep2.length]= myOption
				
				<?php
				$strSQL = "SELECT * FROM Department ORDER BY division_id,department_id ASC ";
				$objQuery = mysql_query($strSQL) or die ("Error Query [".$strSQL."]");
				$intRows = 0;
				while($objResult = mysql_fetch_array($objQuery))
				{
					$intRows++;
				?>
					x = <?php echo $intRows;?>;
					mySubList = new Array();
					str1 = <?php echo $objResult["division_id"];?>;
					str2 = "<?php echo $objResult["department_id"];?> - <?php echo $objResult["department_name"];?>";
					mySubList[x,0] = str2;
					mySubList[x,1] = str1;
					if (mySubList[x,1] == SelectValue){
						var myOption = new Option(mySubList[x,0])
						frmMain.ddlDep2.options[frmMain.ddlDep2.length]= myOption
					}
				<?php
				}
				?>						
			}
			</script>
			<article class="module width_full">
				<header><h3>Add Employee</h3></header>
				<div class="module_content">
				<form name="frmMain" method="post" action="<?php echo $_SERVER["PHP_SELF"];?>">
				<table width="100%" border="0" cellpadding="5">
					<tr>
						<td>Division Name :</td>
						<td>
						<div align="left">
							<select id="ddlDiv" name="txtAddDivisionID" style="width:300px" onChange = "ListDepartment(this.value)">
								<option selected value=""></option>
								<?php
									$strSQL = "SELECT * FROM division ORDER BY division_id ASC ";
									$objQuery_div = mysql_query($strSQL) or die ("Error Query [".$strSQL."]");
									while($objResult = mysql_fetch_array($objQuery_div))
									{
								?>
										<option value="<?php echo $objResult["division_id"];?>"><?php echo $objResult["division_id"];?> - <?php echo $objResult["division_name"];?></option>
										<?php
									}
										?>
							</select>
						</div>
						</td>
					</tr>
					<tr>
						<td>Department Name :</td>
						<td>
						<div align="left">
							<select id="ddlDep" name="txtAddDepartmentID" style="width:300px" onChange = "ListSection(this.value)"></select>
						</div>
						</td>
					</tr>
					<tr>
						<td>Section Name :</td>
						<td>
						<div align="left">
							<select id="ddlSec" name="txtAddSectionID" style="width:300px"></select>
						</div>
						</td>
					</tr>
					<tr>
						<td>Employee ID :</td>
						<td><input type="text" name="txtAddEmployeeID" size="6"></td>
					</tr>
					<tr>
						<td>Employee Name :</td>
						<td><input type="text" name="txtAddEmployeeName" size="50"></td>
					</tr>
					<tr>
						<td>Employee Nickname :</td>
						<td><input type="text" name="txtAddEmployeeNickName" size="10"></td>
					</tr>
						<tr>
						<td>Table phone :</td>
						<td><input type="text" name="txtAddTablePhone" size="3"></td>
					</tr>
					<tr>
						<td>Mobile Phone :</td>
						<td><input type="text" name="txtAddMobilePhone" size="12"></td>
					</tr>
					<tr>
						<td>Internal Mail :</td>
						<td><input type="text" name="txtAddInternalMail" size="50"></td>
					</tr>
					<tr>
						<td>External Mail :</td>
						<td><input type="text" name="txtAddExternalMail" size="50"></td>
					</tr>
					<tr>
						<td>Position :</td>
						<td><input type="text" name="txtAddPosition" size="30"></td>
					</tr>
					<tr>
						<td>Status :</td>
						<td><input type="text" name="txtAddStatus" size="5"></td>
					</tr>
					<tr>
						<td>Activate :</td>
						<!--<td><input type="text" name="txtAddActivate" size="1"></td>-->
						<td>
							<div align="left">
								<select id="ddlAct" name="txtAddActivate">
									<option value="1">Yes</option>
									<option value="2">No</option>
								</select>
							</div>
						</td>
					</tr>
					<tr>
						<td colspan="2" align="right"><div align="center">
						<input name="btnAdd" type="button" id="btnAdd" value="Add" OnClick="frmMain.hdnCmd.value='Add';frmMain.submit();">
						<input type="reset" value="Clear">
						</div></td>
					</tr>
				</table>
				</div>
			</article>
			<article class="module width_full">
				<header><h3>Section</h3></header>
				<div class="module_content">
				<?php
					$strSQL = "SELECT sec.division_id, di.division_name, sec.department_id, dep.department_name, sec.section_id, sec.section_name  
							   from department as dep, division as di, section as sec
							   where sec.division_id = dep.division_id
							     and sec.department_id = dep.department_id
								 and dep.division_id = di.division_id
								 order by sec.division_id, dep.department_id, sec.section_id";
					$objQuery = mysql_query($strSQL) or die ("Error Query [".$strSQL."]");
				?>  
					<input type="hidden" name="hdnCmd" value="">
					<table width="100%" border="1" cellpadding="5">
					  <tr>
						<th> <div align="center">Division Name </div></th>
						<th> <div align="center">Department Name </div></th>
						<th> <div align="center">Section ID</div></th>
						<th> <div align="center">Section Name</div></th>
						<th> <div align="center">Edit</div></th>
						<th> <div align="center">Delete</div></th>
					  </tr>
					<?php
					while($objResult = mysql_fetch_array($objQuery))
					{
					?>
						<?php
						if($objResult["division_id"] == $_GET["DivID"] and $objResult["department_id"] == $_GET["DepID"] 
						   and $objResult["section_id"] == $_GET["SecID"] and $_GET["Action"] == "Edit")
						{
						?>
						  <tr>
							<td>
								<div align="center">
								
								<select id="ddlDiv" name="txtEditDivisionID" style="width:80px" onChange = "ListEditDepartment(this.value)">
								<option selected value=""></option>
								<?php
									$strSQL = "SELECT * FROM division ORDER BY division_id ASC ";
									$objQuery_div1 = mysql_query($strSQL) or die ("Error Query [".$strSQL."]");
									while($objResult1 = mysql_fetch_array($objQuery_div1))
									{
										if($objResult["division_id"]==$objResult1["division_id"])
										{
								?>
											<option value="<?php echo $objResult1["division_id"];?>" selected><?php echo $objResult1["division_id"];?> - <?php echo $objResult1["division_name"];?></option>
										<?php
										}
										else
										{ ?>
											<option value="<?php echo $objResult1["division_id"];?>"><?php echo $objResult1["division_id"];?> - <?php echo $objResult1["division_name"];?></option>	
								<?		}
									}
								?>
								</select>
								<input type="hidden" name="hdnEditDivisionID" size="2" value="<?php echo $objResult["division_id"];?> - <?php echo $objResult["division_name"];?>">
								</div>
							</td>
							<td>
								<div align="left">
									<select id="ddlDep2" name="txtEditDepartmentID" style="width:300px" >
									<option  value="<?php echo $objResult["department_id"];?> - <?php echo $objResult["department_name"];?>" selected=true><?php echo $objResult["department_id"];?> - <?php echo $objResult["department_name"];?></option></select>
									<input type="hidden" name="hdnEditDepartmentID" size="2" value="<?php echo $objResult["department_id"];?> - <?php echo $objResult["department_name"];?>"></td>
								</div>
							<td><input type="text" name="txtEditSectionID" size="2" value="<?php echo $objResult["section_id"];?>">
								<input type="hidden" name="hdnEditSectionID" size="2" value="<?php echo $objResult["section_id"];?>"></td>
							<td><input type="text" name="txtEditSectionName" size="50" value="<?php echo $objResult["section_name"];?>"></td>						
							<td colspan="2" align="right"><div align="center">
							  <input name="btnAdd" type="button" id="btnUpdate" value="Update" OnClick="frmMain.hdnCmd.value='Update';frmMain.submit();">
							  <input name="btnAdd" type="button" id="btnCancel" value="Cancel" OnClick="window.location='<?php echo $_SERVER["PHP_SELF"];?>';">
							</div></td>
						  </tr>
						 <?php
						}
						else
						{
						?>
						  <tr>
							<td><div align="left"><?php echo $objResult["division_id"];?> - <?php echo $objResult["division_name"];?></div></td>
							<td><div align="center"><?php echo $objResult["department_id"];?> - <?php echo $objResult["department_name"];?></div></td>
							<td><div align="center"><?php echo $objResult["section_id"];?></div></td>
							<td><div align="left"><?php echo $objResult["section_name"];?></div></td>
							
							<td align="center"><a href="<?php echo $_SERVER["PHP_SELF"];?>?Action=Edit&DivID=<?php echo $objResult["division_id"];?>&DepID=<?php echo $objResult["department_id"];?>&SecID=<?php echo $objResult["section_id"];?>"><img src="images/icn_edit.png" border="0"/></a></td>
							<td align="center"><a href="JavaScript:if(confirm('Confirm Delete?')==true){window.location='<?php echo $_SERVER["PHP_SELF"];?>?Action=Del&DivID=<?php echo $objResult["division_id"];?>&DepID=<?php echo $objResult["department_id"];?>&SecID=<?php echo $objResult["section_id"];?>';}"><img src="images/icn_trash.png" border="0"/></a></td>
							</tr>
						<?php
						}
					}?>
					</table>
					</form>
					<div class="clear"></div>
				</div>
			</article><!-- end of stats article -->
</section>