// stores the reference to the XMLHttpRequest object
var xmlHttp = createXmlHttpRequestObject(); 

// retrieves the XMLHttpRequest object
function createXmlHttpRequestObject() 
{	
  // will store the reference to the XMLHttpRequest object
  var xmlHttp;
  // if running Internet Explorer
  if(window.ActiveXObject)
  {
    try
    {
      xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
    }
    catch (e) 
    {
      xmlHttp = false;
    }
  }
  // if running Mozilla or other browsers
  else
  {
    try 
    {
      xmlHttp = new XMLHttpRequest();
    }
    catch (e) 
    {
      xmlHttp = false;
    }
  }
  // return the created object or display an error message
  if (!xmlHttp)
 
    alert("Error creating the XMLHttpRequest object.");
  else 
    return xmlHttp;
}

// make asynchronous HTTP request using the XMLHttpRequest object 
function process_state()
{
  // proceed only if the xmlHttp object isn't busy
  if (xmlHttp.readyState == 4 || xmlHttp.readyState == 0)
  {
	  document.regForm.state.length=0;
	  document.regForm.userObj_homeClub.length=0;
	  objOpt = new Option("Wird geladen..",-1);
	  objOpt2 = new Option("Wird geladen..",-1);
	  document.regForm.state.options[document.regForm.state.options.length] = objOpt;
	  document.regForm.userObj_homeClub.options[document.regForm.userObj_homeClub.options.length] = objOpt2;
	  
	 
	  
    // retrieve the name typed by the user on the form
    idx = encodeURIComponent(document.regForm.country[document.regForm.country.selectedIndex].value);
    // execute the quickstart.php page from the server
 //   alert("state: "+idx);
    xmlHttp.open("GET", "state.php?id=" + idx, true);  
    // define the method to handle server responses
    xmlHttp.onreadystatechange = handleServerResponse;
    // make the server request
    xmlHttp.send(null);
  }
  else
    // if the connection is busy, try again after one second  
    setTimeout('process_state()', 1000);
}
function process_clubs()
{
  // proceed only if the xmlHttp object isn't busy
  if (xmlHttp.readyState == 4 || xmlHttp.readyState == 0)
  {
	  

	  document.regForm.userObj_homeClub.length=0;

	  objOpt2 = new Option("Wird geladen..",-1);

	  document.regForm.userObj_homeClub.options[document.regForm.userObj_homeClub.options.length] = objOpt2;
    // retrieve the name typed by the user on the form
    idx = encodeURIComponent(document.regForm.state[document.regForm.state.selectedIndex].value);
    // execute the quickstart.php page from the server
    //alert("clubs: "+idx);
    open_url = "clubs.php?id=" + idx;
    if(idx == -1)
    {
    	cidx = encodeURIComponent(document.regForm.country[document.regForm.country.selectedIndex].value);
    	open_url += "&cid="+cidx;
    }
    //alert(open_url);
    xmlHttp.open("GET", open_url, true);  
    // define the method to handle server responses
    xmlHttp.onreadystatechange = handleClubServerResponse;
    // make the server request
    xmlHttp.send(null);
  }
  else
    // if the connection is busy, try again after one second  
    setTimeout('process_clubs()', 1000);
}

// executed automatically when a message is received from the server
function handleServerResponse() 
{
  // move forward only if the transaction has completed
  if (xmlHttp.readyState == 4) 
  {
    // status of 200 indicates the transaction completed successfully
    if (xmlHttp.status == 200) 
    {
      // extract the XML retrieved from the server
      xmlResponse = xmlHttp.responseXML;
      // obtain the document element (the root element) of the XML structure
      xmlDocumentElement = xmlResponse.documentElement;
      // get the text message, which is in the first child of
      // the the document element
      stateArray 	= xmlDocumentElement.getElementsByTagName("state");
      idArray		= xmlDocumentElement.getElementsByTagName("stateid")
      // update the client display using the data received from the server
      if(stateArray.length == idArray.length)
      {
    	  //Clear Select
    	  document.regForm.state.length=0;
    	  objOpt = new Option("[Auswählen]",-1);
    	  document.regForm.state.options[document.regForm.state.options.length] = objOpt;
//	      newsel = '<select name="userObj_state" class="selForm" onchange="process_clubs()">';
//	      newsel += '<option value="0">[Ausw&auml;hlen]</option>';
	      for(var i = 0; i < stateArray.length; i++)
	      {
	    	//  alert(stateArray[i].firstChild.data.toString());
	    	  objOpt = new Option(stateArray[i].firstChild.data.toString(),parseInt(idArray[i].firstChild.data.toString()));
	    	  document.regForm.state.options[document.regForm.state.options.length] = objOpt;
	    	  //newsel += '<option value="'+idArray[i]+'">'+stateArray[i].firstChild.data.toString()+'</option>';
	      }
//	      newsel += '</select>';
//	      document.getElementById("divMessage").innerHTML = newsel;
      }
      process_clubs();
    } 
    // a HTTP status different than 200 signals an error
    else 
    {
      alert("There was a problem accessing the server: " + xmlHttp.statusText);
    }
  }
}
function handleClubServerResponse() 
{
  // move forward only if the transaction has completed
  if (xmlHttp.readyState == 4) 
  {
    // status of 200 indicates the transaction completed successfully
    if (xmlHttp.status == 200) 
    {
      // extract the XML retrieved from the server
      xmlResponse = xmlHttp.responseXML;
      // obtain the document element (the root element) of the XML structure
      xmlDocumentElement = xmlResponse.documentElement;
      // get the text message, which is in the first child of
      // the the document element
      clubArray 	= xmlDocumentElement.getElementsByTagName("club");
      idArray		= xmlDocumentElement.getElementsByTagName("clubid")
      

      
      
      
      // update the client display using the data received from the server
      if(clubArray.length == idArray.length)
      {
          //Clear Select
    	  document.regForm.userObj_homeClub.length=0;
    	  objOpt = new Option("[Auswählen]",-1);
    	  document.regForm.userObj_homeClub.options[document.regForm.userObj_homeClub.options.length] = objOpt;
//    	      newsel = '<select name="userObj_state" class="selForm" onchange="process_clubs()">';
//    	      newsel += '<option value="0">[Ausw&auml;hlen]</option>';
          for(var i = 0; i < clubArray.length; i++)
          {
        	//  alert(stateArray[i].firstChild.data.toString());
        	  objOpt = new Option(clubArray[i].firstChild.data.toString(),parseInt(idArray[i].firstChild.data.toString()));
        	  document.regForm.userObj_homeClub.options[document.regForm.userObj_homeClub.options.length] = objOpt;
        	  //newsel += '<option value="'+idArray[i]+'">'+stateArray[i].firstChild.data.toString()+'</option>';
          }
      }
    } 
    // a HTTP status different than 200 signals an error
    else 
    {
      alert("There was a problem accessing the server: " + xmlHttp.statusText);
    }
  }
}