var urlSite = "http://www.seixopromotion.com";
function getXhr()               // creation de mon OBJET XMLHttpRequest
{
	var http_request = null ;
	if (window.XMLHttpRequest) 
	{ // Mozilla, Safari,...
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) 
		{
			http_request.overrideMimeType('text/xml');
		}
	} 
	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('Abandon :( Impossible de créer une instance XMLHTTP');
		return false;
	}
	return http_request;
}
function usinage(url,leDiv,nomVar,contVar,lePlus)
{
	url = urlSite+url;
	document.getElementById(leDiv).innerHTML = "<table width=\"100%\"><tr><th height=\"100%\" valign=\"middle\">Chargement en cours...</th></tr></table>";
	obTtc = getXhr();
    obTtc.onreadystatechange = function()
    {
     	if(obTtc.readyState == 4 && obTtc.status == 200)
     	{
			var l = obTtc.responseText;
			document.getElementById(leDiv).innerHTML = unescape(l);
        }
    }
	obTtc.open("POST",url,true);
	obTtc.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
	obTtc.send(nomVar+"="+contVar);
}