function getXMLHttp()
{
  var xmlHttp

  try
  {
    //Firefox, Opera 8.0+, Safari
    xmlHttp = new XMLHttpRequest();
  }
  catch(e)
  {
    //Internet Explorer
    try
    {
      xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
    }
    catch(e)
    {
      try
      {
        xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
      }
      catch(e)
      {
        alert("Your browser does not support AJAX!")
        return false;
      }
    }
  }
  return xmlHttp;
}

function MakeRequest(art_nummer , klant_nummer)
{
  var xmlHttp = getXMLHttp();
  
  xmlHttp.onreadystatechange = function()
  {
    if(xmlHttp.readyState == 4)
    {
      HandleResponse(xmlHttp.responseText , art_nummer);
    }
  }

  xmlHttp.open("GET", "/site/modules/ajax/ajax.php?art=" + art_nummer + "&klant=" + klant_nummer, true); 
  xmlHttp.send(null);
}

function MakeDelRequest(art_nummer , klant_nummer)
{
  var xmlHttp = getXMLHttp();
  
  xmlHttp.onreadystatechange = function()
  {
    if(xmlHttp.readyState == 4)
    {
      HandleResponse(xmlHttp.responseText , art_nummer);
    }
  }

  xmlHttp.open("GET", "/site/modules/ajax/ajax.php?art=" + art_nummer + "&klant="+klant_nummer+"&del=1", true); 
  xmlHttp.send(null);
}

function HandleResponse(response , art_nummer)
{
  document.getElementById('ResponseDiv' + art_nummer).innerHTML = response;
}

function MakeRankRequest(art_nummer , klant_nummer, value)
{
  var xmlHttp = getXMLHttp();
  
  xmlHttp.onreadystatechange = function()
  {
    if(xmlHttp.readyState == 4)
    {
      HandleRankResponse(xmlHttp.responseText , art_nummer);
    }
  }

  xmlHttp.open("GET", "/site/modules/ajax/ajax.php?rank_art=" + art_nummer + "&rank_klant="+klant_nummer+"&value="+value, true); 
  xmlHttp.send(null);
}

function HandleRankResponse(response , art_nummer)
{
  document.getElementById('RankDiv' + art_nummer).innerHTML = response;
}

function MakeAdviesRequest(art_nummer , klant_nummer, value)
{
  var xmlHttp = getXMLHttp();
  
  xmlHttp.onreadystatechange = function()
  {
    if(xmlHttp.readyState == 4)
    {
      HandleAdviesResponse(xmlHttp.responseText , art_nummer);
    }
  }

  xmlHttp.open("GET", "/site/modules/ajax/ajax.php?advies_art=" + art_nummer + "&advies_klant="+klant_nummer+"&value="+value, true); 
  xmlHttp.send(null);
}

function HandleAdviesResponse(response , art_nummer)
{
  document.getElementById('AdviesDiv' + art_nummer).innerHTML = response;
}

function MakeAddRequest(art_nummer , art_aantal, art_tabindex)
{
  var xmlHttp = getXMLHttp();
  
  xmlHttp.onreadystatechange = function()
  {
    if(xmlHttp.readyState == 4)
    {
      HandleAddResponse(xmlHttp.responseText , art_nummer);
    }
  }

  xmlHttp.open("GET", "/site/modules/ajax/ajax.php?add_art=" + art_nummer + "&art_aantal="+art_aantal+"&art_tabindex="+art_tabindex, true); 
  xmlHttp.send(null);
}

function HandleAddResponse(response , art_nummer)
{
  document.getElementById('AddDiv' + art_nummer).innerHTML = response;
}