// global flag
var isIE = false;

// global request and XML document objects
var request=false;


var nbRequest=0;



// retrieve XML document (reusable generic function);
// parameter is URL string (relative or complete) to
// an .xml file whose Content-Type is a valid XML
// type, such as text/xml; XML source must be from
// same domain as HTML file
function loadXMLDoc(url, callBack) {

    // url = "loadimage.php?numero="+numero;
    // alert("debut de loadXMLDoc, url:"+url+" callBack : "+callBack);

        // branch for native XMLHttpRequest object
    if (window.XMLHttpRequest) {
        request = new XMLHttpRequest();
        request.onreadystatechange = callBack;
        request.open("GET", url, true);
        request.send(null);
    // branch for IE/Windows ActiveX version
    } else if (window.ActiveXObject) {
        isIE = true;
        request = new ActiveXObject("Microsoft.XMLHTTP");
        if (request) {
            request.onreadystatechange = callBack;
            request.open("GET", url, true);
            request.send();
       }
    }
}