function get_data(obj)
{

if (typeof(obj) == "undefined") { return false ; }

if (typeof(obj.text) == "undefined")
  return obj.textContent ;
else
  return obj.text ;
  
}

function urlencode (ch)
{
  ch = ch.replace("/[ ]/g","+"); 
  return  escape(ch);

}

function urldecode (ch) 
{
  ch = ch.replace(/[+]/g," ");
  return unescape(ch);
}

function ajaxRequestFromForm(id_form, callback, params)
{
  ObjAJAX = new AjaxClassic();
  ObjAJAX.setParamFromForm(document.getElementById(id_form));
  ObjAJAX.setParam({onComplete : callback+"('"+params+"', response)", returnFormat:'xml'});
  ObjAJAX.execute();
  return false;
}

function ajaxRequest(urlTo, dataString)
{
  ObjAJAX = new AjaxClassic();
  ObjAJAX.setParam ({
    url         : urlTo,
    returnFormat    : "txt",
    method        : "POST",
    data        : dataString,
    asynchronus     : true,
    onComplete      : "document.body.innerHTML = response"
  });
  ObjAJAX.execute();
}

function ajaxRequest2(urlTo)
{
  ObjAJAX = new AjaxClassic();
  ObjAJAX.setParam (
  {
    url         : urlTo,
    returnFormat  : "txt",
    method      : "POST",
    data        :
    {
      val1  : "1",
      val2  : "2",
      val3  : "3"
    },
    asynchronus : true,
    onComplete    : function (response) { return true ;},
    onFailure     : function (errorCode) { return true ;}
  });
  ObjAJAX.execute();
}

function ErreurObj(txt)
{
  // Variable //
  this.txt = txt;
  this.caller = getCaller(ErreurObj.caller);
  
  // Fonction //
  this.toString = function ()
  {
    return "Erreur : " + this.txt + " Fonction : " + this.caller;
  }
}

function isset(toTest)
{
  return (typeof toTest != "undefined");
}

// Synthaxe : Array.inArray ([String ChercheQuoi]) Boolean
// Chercher pour une chaine particuliere dans un tableau
function inArray(text)
{
  for (a=0; a<this.length; a++)
  {
    if(this[a] == text)
    {
      return true;
    }
  }
}

Array.prototype.inArray = inArray;

// Synthaxe : getCaller ([String fonction.caller]) String
// Retourne le nom de la fonction appartir de l'attribut caller //
function getCaller(rawCaller)
{
  rawCaller = rawCaller.toString();
  if (rawCaller == null)
    return "";
  return rawCaller.substring(rawCaller.indexOf("function ") + 9,rawCaller.indexOf("(")).replace(" ","");
}

function AjaxClassic()
{
  // Variable //
  var theobject = this ;
  
  

this.init = function()
{
  this.obj = null;
  if (window.XMLHttpRequest)
    this.obj = new XMLHttpRequest();
  else if (window.ActiveXObject) // if IE
  {
    var ieversions = ['Msxml2.XMLHTTP','Microsoft.XMLHTTP','Msxml2.XMLHTTP.5.0','Msxml2.XMLHTTP.4.0','Msxml2.XMLHTTP.3.0'];
    
    for(var i=0; !this.obj && i < ieversions.length; i++)
    {
      try
      {
        this.obj = new ActiveXObject(ieversions[i]);
      }
      catch(e) { }
    }
  }
  
  
}

// Lorsque la requête ne réussit pas
this.onFailure = function (errorCode)
{
  var err = new ErreurObj(errorCode);
  // alert(err.toString());
  return true ;
}

// Lorsque la requête réussit
this.onComplete = function (response)
{
  // ...
}

this.setParamFromForm = function (obj)
{
  if (!isNaN(obj))
    obj = document.forms[obj];
  
  if (typeof obj == "string")
    eval("obj = document."+obj);
  
  if (!isset(obj))
    return ErreurObj("Donnée Invalide");

  this.method = (isset(obj.method) && (["GET","POST"].inArray(obj.method.toUpperCase()))) ? obj.method.toUpperCase() : this.method;
  this.url = obj.action;
  
  for (i=0; i < obj.elements.length;i++)
  {
    if ((obj.elements[i].type.toLowerCase() == "radio") || (obj.elements[i].type.toLowerCase() == "checkbox"))
    {
      if (obj.elements[i].checked == false)
        continue;
    }  
    if (["file","button","reset","submit"].inArray(obj.elements[i].type.toLowerCase()))
      continue;
    
    if (this.data != null && this.data != '')
      this.data += "&";
    
    this.data += obj.elements[i].name + "=" + escape(obj.elements[i].value);
  }
}
this.setParam = function (arr)
{
  if (typeof arr != "object" && !isset(arr))
    return ErreurObj("Donnée Invalide");
  
  for(k in arr)
  {
    switch (k)
    {
      case "url" :
        this.url = arr[k];
        break;
      case "method" :
        this.method = (["GET","POST"].inArray(arr[k].toUpperCase())) ? arr[k].toUpperCase() : this.method;
        break;
      case "data" :
        if (typeof arr[k] == "string")
        {
          if (this.data != "")
            this.data += "&";
          this.data += arr[k];
        }
        else
        {
        if (typeof arr[k] != "object")
          break;
        
        for (j in arr[k])
        {
          if (this.data != "")
            this.data += "&";
          this.data += j + "=" + escape(arr[k][j]);
        }
        
        }
        break;
      case "asynchronus" :
        this.asyn = arr[k];
        break;
      case "onComplete" :
        this.onComplete = arr[k];
        break;
      case "tag" : 
        this.tag = arr[k];
        break;
      case "onFailure" : 
        this.onFailure = arr[k];
        break;
      case "returnFormat" : 
        this.returnFormat = arr[k];
        break;
    }
  }
}
this.execute = function ()
{

  this.obj.open(this.method,this.url,this.asyn);
  
  if (this.method == "POST")
    this.obj.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
  
  
  if (this.asyn)
  {
  
  
    _tempAJAX_Reference_ = this; // Crée une copie de l'objet AJAX courant pour pouvoir le récupérer après //
    this.obj.onreadystatechange = function ()
    {
    
      var _tempAJAX_Reference_ = theobject ;
  
      if (_tempAJAX_Reference_.obj.readyState == 4 && _tempAJAX_Reference_.obj.status == 200)
      {
            
            
        if (_tempAJAX_Reference_.returnFormat != "txt")
          response = _tempAJAX_Reference_.obj.responseXML;
        else
          response = _tempAJAX_Reference_.obj.responseText;
        
        if (typeof _tempAJAX_Reference_.onComplete == "string")
          eval (_tempAJAX_Reference_.onComplete);
        else
          _tempAJAX_Reference_.onComplete(response,_tempAJAX_Reference_);
      }
      else if (_tempAJAX_Reference_.obj.readyState == 4)
      {
        errorCode = _tempAJAX_Reference_.obj.status;
        if (typeof _tempAJAX_Reference_.onFailure == "string")
          eval(_tempAJAX_Reference_.onFailure);
        else
          _tempAJAX_Reference_.onFailure(errorCode,_tempAJAX_Reference_);
      }
      
      
    }
    this.obj.send(this.data);
  }
  else
  {
    this.obj.send(this.data);
    
    if (this.obj.status == "200")
    {
      if (this.returnFormat != "txt")
        response = this.obj.responseXML;
      else
        response = this.obj.responseText;
      
      if (typeof this.onComplete == "string")
        eval (this.onComplete);
      else
        this.onComplete(response);
    }
    else
    {
      errorCode = this.obj.status;
      if (typeof this.onFailure == "string")
        eval (this.onFailure);
      else
        this.onFailure(errorCode);
    }
  }
}

  this.asyn = true;
  this.data = "";
  this.url = "";
  this.method = "GET";
  this.returnFormat = "txt";
  this.tag = "";
  this.obj = null ;
  theobject.init();


}