var AdminResponse = "";

	function parseResponse(field){

		var nText = AdminResponse.getElementsByTagName('optionText');
		var nVal = AdminResponse.getElementsByTagName('optionVal');
		document.forms["area"].elements[field].options.length = 1;
		
		for (i=0; i<nText.length; i++)
			{ 
			 var nOption = document.createElement('option'); 
			 var isText = document.createTextNode(nText[i].firstChild.data); 
			 nOption.setAttribute('value',nVal[i].firstChild.data); 
			 nOption.appendChild(isText); 
			 document.forms["area"][field].appendChild(nOption); 
			}
	}

      function update(nVal, field){

              var AdminRequest = window.ActiveXObject ? new ActiveXObject("Microsoft.XMLHTTP") : new XMLHttpRequest();   
              AdminRequest.onreadystatechange = function()
                  {
                   if (AdminRequest.readyState == 4)
                      {
                      if (AdminRequest.status == 200)
                          {
                          AdminResponse = AdminRequest.responseXML;
                          parseResponse(field);
                          }
                      else     {
                           alert('Error Update.php File '+ AdminRequest.statusText);
                          }
                      }
                  }
              var infoStr = "?choice="+nVal;
              AdminRequest.open("GET", "Update.php"+infoStr, true);
              AdminRequest.send(null);
          }