function createXHR() 
{
    var request = false;
        try {
            request = new ActiveXObject('Msxml2.XMLHTTP');
        }
        catch (err2) {
            try {
                request = new ActiveXObject('Microsoft.XMLHTTP');
            }
            catch (err3) {
		try {
			request = new XMLHttpRequest();
		}
		catch (err1) 
		{
			request = false;
		}
            }
        }
    return request;
}




	function submitForm(page, titre)
	{
	document.title=titre;

	var xhr=createXHR();
	xhr.open("GET", page, true);

	document.getElementById('loadindicator').style.display='block';

	xhr.onreadystatechange=function()
	{
//  	document.getElementById('loadindicator').style.display='block';
		if (xhr.readyState == 4 && xhr.status == 200)
		{
			document.getElementById("zonecentre").innerHTML= xhr.responseText;
			document.getElementById('loadindicator').style.display='none';
		}
	};

	xhr.send(null);
	}