Probleme avec ASP

<%
if not isnull(Request.QueryString("pays")) or Request.QueryString("pays")<>"" then
dim pays
pays = Request.QueryString("pays")
sql = "EXEC reg_aff @pays = '"&pays&"';"
RS.Open sql, conn
Response.Write("<select name='region' class='hideComboBoxList2' size='6' id='comboBoxList2'>")
do while not rs.eof
Response.Write("<option>")
response.write(RS("region"))
Response.Write("</option>")
RS.movenext
loop
Response.Write("</select>")
end if
%> 

<input type="text" name="pays" class="displayEditField1" id="comboBoxEditField1" value="<% 
If Not isnull(Request.QueryString("pays")) or Request.QueryString("pays")<> "" Then
response.write(Request.QueryString("pays")) 
else 
response.write("Pays") 
end if
%>"/> 

<form method="POST" action="page2.asp">
<select name="Pays" class="hideComboBoxList1" size="6" id="comboBoxList1" Onchange="Update_Reg();">
<option>France</option> <!-- ici les options sont introduites en dur -->
<option>Italie</option>
<option>Argentine</option>
<option>Chine</option>
</select> 

<%
if not isnull(Request.QueryString("pays")) or Request.QueryString("pays")<>"" then
dim pays
pays = Request.QueryString("pays")
sql = "EXEC reg_aff @pays = '"&pays&"';"
RS.Open sql, conn
Response.Write("<select name='region' class='hideComboBoxList2' size='6' id='comboBoxList2'>")
do while not rs.eof
Response.Write("<option>")
response.write(RS("region"))
Response.Write("</option>")
RS.movenext
loop
Response.Write("</select>")
end if
%> 
</form>

<script langage="javascript">
function Update_Reg()
{
  document.location="page.asp?pays=" + document.getElementById('comboBoxList1').value;
}
</script>

<select name="Pays" class="hideComboBoxList1" size="6" id="comboBoxList1" Onchange="document.location='page.asp?pays=' + document.getElementById('comboBoxList1').value;">

<select name="Pays" class="hideComboBoxList1" size="6" id="comboBoxList1" onchange="document.location='./index.asp?page=page_form.asp&pays=' + document.getElementById('comboBoxList1').value;">

<script>
new ComboBox(document.getElementById('comboBoxEditField1'),document.getElementById('comboBoxList1'));
</script> 

	
function ComboBoxCore(e, l)
	{
        var editField = e;
        var list = l;
        var closeList;
        var completionActive = false;
        var previousLength = 0;
        var lastLength = 0;
        var textList;
		
        var closeComboBoxList = function()
		{
          list.style.visibility = "visible";
          list.style.display = "none";
          list.disabled = true;
        }
      
        this.openComboBoxList = function()
		{
          if (closeList) window.clearTimeout(closeList);
          list.style.visibility = "visible";
          list.style.display = "block";
          list.disabled = false;
          return false;
        }
      
        this.initCloseComboBoxList = function()
		{
          closeList = window.setTimeout(closeComboBoxList, 0);
          return false;
        }
      
        this.onfocusComboBoxList = function()
		{
          if (closeList) window.clearTimeout(closeList);
          return false;
        }
        
        this.updateList2EditField = function()
		{
          if(list.selectedIndex>=0)
            editField.value = list[list.selectedIndex].text;
          editField.focus();
          editField.select();
          return false;
        }
        
        var completionComboBox = function(prefix, completion)
		{
          editField.value = prefix;
          if(typeof document.selection != 'undefined')
			{
				var range = document.selection.createRange();
				range.text = completion;
				range.moveStart('character', -completion.length);
				range.select();
			}
			else if(typeof editField.selectionStart != 'undefined')
			{
			var i = editField.value.length;
            editField.value += completion;
            editField.selectionStart = i;
			}
        }
        
        var convert = function(w)
		{
           var word = w.toUpperCase();
           word=word.replace(/[\u00C0\u00C1\u00C2\u00C3\u00C4\u00C5\u00C6]/gi,'A');
           word=word.replace(/[\u00C7]/gi,'C');
           word=word.replace(/[\u00C8\u00C9\u00CA\u00CB]/gi,'E');
           word=word.replace(/[\u00CC\u00CD\u00CE\u00CF]/gi,'I');
           word=word.replace(/[\u00D1]/gi,'N');
           word=word.replace(/[\u00D2\u00D3\u00D4\u00D5\u00D6]/gi,'O');
           word=word.replace(/[\u00D9\u00DA\u00DB\u00DC]/gi,'U');
           return word;
        }
        
        this.searchEditFieldIn2List = function()
		{
          var i = 0;
          var value = editField.value;
          var listValue;
          var prefix;
          
          if (lastLength == value.length)
		  {
            completionActive = false;
            previousLength = 0;
            return false;
          }
          
          if ((completionActive == true)&&(value.length == previousLength))
            editField.value = value.substr(0, value.length-1);
          
          if (editField.value == 0)
		  { 
            completionActive = false;
            previousLength = 0;
            lastLength = 0;
            list.selectedIndex = -1;
            return false;
          }
          
          value = convert(editField.value);
          while (value > textList[i])++i;
          list[i].selected = true;
          
          listValue = list[i].text;
          prefix = listValue.substr(0, value.length);
          if (convert(prefix) == value)
		  {
            completionActive = true;
            previousLength = value.length;
            completionComboBox(prefix, listValue.slice(value.length));
          }
		  else
		  {
            completionActive = false;
            previousLength = 0;
          }
          lastLength = editField.value.length;
          editField.focus();
          return false;
        }
        
        this.init = function()
		{
          textList = new Array(list.options.length);
          
          for (var i=0; i < list.options.length; ++i)
		  {
            textList[i] = convert(list[i].text);
          }
        }
      }
      
      function ComboBox(e, l)
	  {
        this.editField = e;
        this.list = l;
        var combo = new ComboBoxCore(this.editField, this.list);
        
        combo.init();
        
        this.list.comboBox = combo;
        this.editField.comboBox = combo;
        
		<!-- pour les select -->
		this.list.onclick = function(){return this.comboBox.updateList2EditField();};
		<!--this.list.onchange = function(){return this.comboBox.updateList2EditField();};-->
		this.list.onkeyup = function(){return this.comboBox.updateList2EditField();};
		this.list.onblur = function(){return this.comboBox.initCloseComboBoxList();};
		this.list.onfocus = function(){return this.comboBox.onfocusComboBoxList();};
		
        <!-- pour les input -->
        this.editField.onfocus = function(){return this.comboBox.openComboBoxList();};
        this.editField.onblur = function(){return this.comboBox.initCloseComboBoxList();};
        this.editField.onkeyup = function(){return this.comboBox.searchEditFieldIn2List();};
       }

<input type="text" name="pays" class="displayEditField1" id="comboBoxEditField1" value="
<%
If Not isnull(Request.QueryString("pays")) or Request.QueryString("pays")<> "" Then
response.write(Request.QueryString("pays")) 
else 
response.write("Pays") 
end if
%>
"/>

<select name="Pays" class="hideComboBoxList1" size="6" id="comboBoxList1" onchange="document.location='./index.asp?page=vins_consultation.asp&pays=' + document.getElementById('comboBoxList1').value;">
								<option>France</option>
								<option>Italie</option>
								<option>Argentine</option>
							</select>
<script>
new ComboBox(document.getElementById('comboBoxEditField1'),document.getElementById('comboBoxList1'));
</script>

<input name="region" type="text" class="displayEditField2" id="comboBoxEditField2"/>

<%
	If Not isnull(Request.QueryString("pays")) or Request.QueryString("pays")<> "" Then
	dim pays
	pays = Request.QueryString("pays")
	sql = "EXEC region_consultation @pays = '"&pays&"';"
	RS.Open sql, conn
	Response.Write("<select name='region' class='hideComboBoxList2' size='6' id='comboBoxList2'>")
	do while not rs.eof
	Response.Write("<option>")
	response.write(RS("region"))
	Response.Write("</option>")
	RS.movenext
	loop
	Response.Write("</select>")
	End If
%>
<script>
	new ComboBox(document.getElementById('comboBoxEditField2'),document.getElementById('comboBoxList2'));
</script>