/*
 * Fonction utile au XMLHttpRequest
 */
var http_request;
var bLoading = false;

// Function de requete XMLHttpRequest
function xhrRequest(strURL,strFunction) {
	http_request = false;
	bLoading = true;
	if (window.XMLHttpRequest) {
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			http_request.overrideMimeType("text/x-json");
		}
	} else if (window.ActiveXObject) {
		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 creer une instance XMLHTTP.\r\rVeuillez recharger la page en appuyant sur la touche F5.");
		bLoading = false;
		return false;
	}
	http_request.onreadystatechange = eval(strFunction);
	http_request.open("GET", strURL, true);
	http_request.send(null);
}

// Function de loading
function verifLoading(bOver) {
	var oDiv = document.getElementById("loading");
	if (bLoading && bOver) {
		oDiv.style.display = "inline";
		oDiv.style.left = posx + 10;
		oDiv.style.top = posy + 10;
	} else {
		oDiv.style.display = "none";
		oDiv.style.left = 0;
		oDiv.style.top = 0;
	}
}