AJAX-populated form not sending new data!

I'm loading data into some select lists, and they're displayed on the page properly. However, javascript cannot access the news values and neither can any 'action' page.

The form

<form name="frm_locations" method="post" action="manage_locations.php" enctype="multipart/form-data">
				 <tr>
					<td height="8" colspan="9"></td>
                </tr>
				<tr>
					<td class="accinfo-block-col01" align="left">Country: </td>		
					
					<td colspan="2" class="accinfo-block-col02-span">
					<?php countries($country);?>
					</td>
				</tr>
				 <tr>
                    <td height="10" colspan="8"></td>
                </tr>
				<tr>
					<td class="accinfo-block-col01" align="left">State: </td>		
					
					<td colspan="2" class="accinfo-block-col02-span" id="statespan">
					<?php states($countryid,$state);?>
					</td><td>If Other please Specify</td>
					<td><input type="text" name="otherstate"/></td>
					<td colspan="2">&nbsp;</td>
				</tr>
				 <tr>
                    <td height="10" colspan="8"></td>
                </tr>
				<tr>
					<td class="accinfo-block-col01" align="left">City: </td>
					<td id="cityspan"><?php cities($state,$city,$country);?>
					
					</td><td>&nbsp;</td>
					<td>If Other please Specify</td>
					<td><input type="text" name="othercity"/></td>
					<td colspan="2">&nbsp;</td>
				</tr>
                <!--
					<tr>
					<td class="accinfo-block-col01" align="left">Area: </td>		
					
					
					<td  id="areaspan"><?php areas($country,$state,$city); 
					 
					?>
					
					</td><td>&nbsp;</td>
					<td>If Other please Specify</td>
					<td><input type="text" name="otherarea"/></td>
					<td colspan="2">&nbsp;</td>
				</tr>-->
				<tr>
					<td class="accinfo-block-col01">&nbsp; </td>				
				</tr>
                <tr>
                    
                    <td colspan="7">
						<table width="100%" border="0" cellspacing="0" cellpadding="0">
							<tr>
								<td width="70%" align="center" >
									<input type="submit" name="btn_location" value="Add" class='button-normal'>
								</td>
							</tr>
						 </table>
						
						</td>
					 </tr>
				</table>
				 </form>

Code (markup):

Used to create AJAX-driven query (tested and working).

function getState() {

     var countryid = document.getElementById("country").value;

	

	 var url ="get_state.php?countryid=" +countryid;

	 request.open("GET", url, true);

     request.onreadystatechange =updatestate ;

     request.send(null);

   }

  

   function updatestate() {

     if (request.readyState == 4) {

		if(request.status == 200){

       var exInfo = request.responseText;

	  			document.getElementById("statespan").innerHTML = "<select name='state' id='state' class='black8' onchange='getcity();' >"+exInfo+"</select>";

				

		 }

     }

   }

   function getcity() {

     var stateid = document.getElementById("state").value;

	 var url ="get_city.php?stateid=" +stateid;

	 request.open("GET", url, true);

     request.onreadystatechange =updatecity ;

     request.send(null);

   }

  

   function updatecity() {

     if (request.readyState == 4) {

	   if(request.status == 200){

       var exInfo = request.responseText;
		document.getElementById("cityspan").innerHTML =exInfo;
				

		 }

     }

   }

Code (markup):

Used to retrieve information (tested and working).

<?
include_once("../includes/MySQLDB.php");
include_once("../includes/table.macro.php");

$conn = new MySQLDB();
$conn->getConnection();				//start database connection

$stateid=$_REQUEST['stateid'];

$SQLstateInfo ="select CityID,City from Cities  C, States S where C.StateID=S.StateID and S.State='$stateid'  order by City";
$city_options=$conn->executeQueryAsArray($SQLstateInfo);
		  if (!$city_options){
		$CityInfo="<input  type ='text' name='city'  class='input' size='10'>";
		  }
	        else
			{
				$CityInfo="<select name='city' id='city' class='black8'>";
				$CityInfo.= "<option value='0'>Select City</option>";
				foreach ($city_options as $value)
                { 
				$CityInfo.="<option value='$value[City]' >$value[City]</option>";
				}
				$CityInfo.="</select>";
			}
			$CityInfo.='asdasdasdasdasdasd';
		echo $CityInfo;
$conn->closeConnection();
?>

Code (markup):

Any suggestions? Thanks a lot for your help!

 

Firebug indicated that the updates select lists don't belong to any form, despite being within the "frm_locations" form.