ช่วยดูโค้ดให้หน่อยได้ไม๊คะว่าผิดตรงไหนหรอ จึงส่งค่า Ajax ไม่ไปนะคะ

//AutoFill
	   var HttPRequest = false;

	   function doCallAjax(fProductName,fProductID) {
	   //alert(fProductName+fProductID);
		  HttPRequest = false;
		  if (window.XMLHttpRequest) { // Mozilla, Safari,...
			 HttPRequest = new XMLHttpRequest();
			 if (HttPRequest.overrideMimeType) {
				HttPRequest.overrideMimeType('text/html');
			 }
		  } else if (window.ActiveXObject) { // IE
			 try {
				HttPRequest = new ActiveXObject("Msxml2.XMLHTTP");
			 } catch (e) {
				try {
				   HttPRequest = new ActiveXObject("Microsoft.XMLHTTP");
				} catch (e) {}
			 }
		  } 
		  
		  if (!HttPRequest) {
			 alert('Cannot create XMLHTTP instance');
			 return false;
		  }

		  var url = 'AjaxGetFill.php';
		  var pmeters = "tProductName=" + encodeURI( document.getElementById(fProductName).value);

			HttPRequest.open('POST',url,true);

			HttPRequest.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
			HttPRequest.setRequestHeader("Content-length", pmeters.length);
			HttPRequest.setRequestHeader("Connection", "close");
			HttPRequest.send(pmeters);
			
			
			HttPRequest.onreadystatechange = function()
			{

				//if(HttPRequest.readyState == 3)  // Loading Request
				//{
					//document.getElementById(fProductName).innerHTML = "..";
				//}

				if(HttPRequest.readyState == 4) // Return Request
				{
					var myProduct = HttPRequest.responseText;
					if(myProduct != "")
					{
						var myArr = myProduct.split("|");
						document.getElementById(fProductID).value = myArr[0];
						//document.getElementById(fPrice).value = myArr[1];
					}
				}
				
			}

	   }

function CreateNewRow()
	{
		var intLine = parseInt(document.frm_request.hdnMaxLine.value);
		intLine++;
			
		var theTable = document.getElementById("tbExp");
		var newRow = theTable.insertRow(theTable.rows.length)
		newRow.id = newRow.uniqueID

		var newCell
//*** Column 1 ***//
		newCell = newRow.insertCell(0);
		newCell.id = newCell.uniqueID;
		newCell.setAttribute("className", "css-name");
		newCell.innerHTML = "<center><SELECT NAME=\"txtProductName1"+intLine+"\" ID=\"txtProductName1"+intLine+"\" OnChange=\"JavaScript:doCallAjax('txtProductName1"+intLine+"','txtProductID1'"+intLine+");\"></SELECT></center>";
--------------------------------- เมื่อเลือกข้อมูลในในฟิลด์นี้ จะ Fill ข้อมูล ใส่ลงใน ฟิดล์นี้ txtProductID1"+intLine+ นะคะ --------------------------------------		
		//*** Create Option ***//
		CreateSelectOption("txtProductName1"+intLine,"productTiles"+intLine,intLine)

		//*** Column 2 ***// ---------------------------------ตรงนี้ข้อมูลที่ต้อง Fill Auto จากการเลือกข้อมูลใน Column 1 --------- 
		newCell = newRow.insertCell(1);
		newCell.id = newCell.uniqueID;
		newCell.setAttribute("className", "css-name");
		newCell.innerHTML = "<center><INPUT TYPE=\"TEXT\" SIZE=\"20\" NAME=\"txtProductID1"+intLine+"\" ID=\"txtProductID1"+intLine+"\"  VALUE=\"\"></center>";
}

	/*** By Weerachai Nukitram ***/
	/***  http://www.ThaiCreate.Com ***/
include("../../includes/config.php");
include(INCLUDES_PATH."connectDB_access.php");
	$strProduct = trim($_POST["tProductName"]);

	$strSQL = "SELECT * FROM tbl_spt_productTiles WHERE productName_en = '".$strProduct."' ";
	$result_dataUser 	= odbc_exec($link,$strSQL) or die ("Error Query [".$strSQL."]");
	//$objResult = mysql_fetch_array($objQuery);
	while($itemUser = odbc_fetch_array($result_dataUser))
	{
		echo $itemUser["material_code"]."|".$itemUser["Price1_perBaseUnit"];
	}

	mysql_close($objConnect);