function AJAXParameters(){
  this.m_Method = '';
  this.m_Parameters = new Array();
  this.add = function(_name, _value) {
    this.m_Parameters[_name] = _value;
  }

  this.SetMethod = function(_method) { this.m_Method = _method; }

  // TODO: ADD METHODS TO STREAM PARAMETERS
  this._buildQueryString = function()
  {
    var queryString = '';

    if(this.m_Parameters.Length<1)
      return queryString;
    else
      queryString = '?';

    for(var key in this.m_Parameters){
      queryString += key + "=" + this.m_Parameters[key] + "&";
    }
    queryString = queryString.replace(/&$/,'');
    return queryString;
  }
}

function AJAXClient()
{
}

AJAXClient.invoke = function(_url, _parameters, _async, _format, _callback)
{ // TODO: ADD LOGIC IF THE FORMAT IS OF TYPE SOAP
  if(_format == "SOAP"){
    AJAXClient.invokeSOAP(_url, _parameters, _async, _callback);
  } else if(_format == "JSON"){
    AJAXClient.invokeJSON(_url, _parameters, _async, _callback);
  }  else if(_format == "XML"){
    AJAXClient.invokeSOAP(_url, _parameters, _async, _callback);
  } else {
    AJAXClient.invokeTXT (_url, _parameters, _async, _callback);
  }
}


AJAXClient.invokeSOAP = function(_url, _parameters, _async, _callback){
  // TODO: IMPLEMENT
}

AJAXClient.invokeXML = function(_url, _parameters, _async, _callback){
  // TODO: IMPLEMENT
}

AJAXClient.invokeJSON = function(_url, _parameters, _async, _callback){
  // TODO: IMPLEMENT
}

AJAXClient.invokeTXT = function(_url, _parameters, _async, _callback){
  var xmlHttp = AJAXClient._getXmlHttp();
  xmlHttp.onreadystatechange = _callback;

  xmlHttp.onreadystatechange = function()
  {
    if(xmlHttp.readyState == 4)
      _callback(xmlHttp);
  }

  _url += _parameters._buildQueryString();
  xmlHttp.open("GET",_url,true);
  xmlHttp.send(null);
}


AJAXClient._getXmlHttp = function()
{
  var xmlHttp;
  try
  {
    if(window.XMLHttpRequest)   // Non-IE browsers
    {
      xmlHttp = new XMLHttpRequest();
      return xmlHttp;
    }
    else if (window.ActiveXObject)   // IE
    {
        return new ActiveXObject("Msxml2.XMLHTTP");
    }
  }
  catch (ex)
  {
  }
  throw new Error("Your browser does not support XmlHttp objects");
}


/***  HANDLERS (Not a great Idea ***/
function JSONHandler(){
}

function XMLHandler(){
  if(this.readyState == 4 && this.status == 200) {
    if(this.responseXML != null && this.responseXML.getElementById('test').firtChild.data)
      // success: Process Data
      testXML(this.responseXML.getElementById('test').firstChild.data);
  } else if (this.readyState == 4 && this.status != 200) {
    // fetched the wrong page or network error...
    // Process Data (ERROR SOMEHOW)
      testXML(null);
  }
}

function testXML(data) {
 // taking care of data
}

function TXTHandler(r){

  document.ajaxTest.time.value=r.responseText;
}