var http_request = false;
var xmlDoc;
var update_container

function makeRequest(url, params, div_id) {
       //document.getElementById("params_ajax").value=params
			 update_container=div_id
	   http_request = false;
        if (window.XMLHttpRequest) { // Mozilla, Safari,...
            http_request = new XMLHttpRequest();
            if (http_request.overrideMimeType) {
                http_request.overrideMimeType('text/xml');
                // See note below about this line
            }
        } else if (window.ActiveXObject) { // IE
            try {
                http_request = new ActiveXObject("Msxml2.XMLHTTP");
            } catch (e) {
                try {
                    http_request = new ActiveXObject("Microsoft.XMLHTTP");
                } catch (e) {}
            }
        }

        if (!http_request) {
            alert('Désolé, votre navigateur ne supporte pas les technologies que nous employons dans ce site. Appelez-nous pour passer votre commande.');
           // window.location="liens.html";
			return false;
        }
		http_request.onreadystatechange = traiterReponse;
		http_request.open("POST", url, true);
		http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	  http_request.send(params);
}

function traiterReponse()
{
   if (http_request.readyState == 4)
	{
		if (http_request.status == 200)
		{
			var xmlDoc = http_request.responseXML;
			var contenu = xmlDoc.getElementsByTagName('contenu');
			var str_data=contenu[0].childNodes[0].data;
		
			document.getElementById(update_container).innerHTML=str_data
    }
  }
}