function visitSite(num)
{
	var http_request = false;

	if (window.XMLHttpRequest)
	{
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType)
		{
			http_request.overrideMimeType('text/xml');
		}
	}
	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("Erreur : XMLHTTP impossible ! Utilisez un autre navigateur.");
		return false;
	}

	var url = 'http://www.sites-fr.info/visite.php?id='+num;
	http_request.open('POST', url, false);
	http_request.send(null);
}