function showOverlay() {
	
	var ovl = document.getElementById('overlayPositioner');
	ovl.style.visibility = 'visible';
	return false;
}

function hideOverlay() {
	
	var ovl = document.getElementById('overlayPositioner');
	ovl.style.visibility = 'hidden';
	return false;
}

function launchBB(){
winName="BlackBerry";
features="status=0,toolbar=0,location=0,menubar=0,directories=0,resizable=0,scrollbars=0, width=300, height=300"
theURL = "http://webbooking.louvre-hotels.fr/m/bb/";
window.open (theURL,winName,features);
}
function launchSMT(l){
winName="Smartphone";
features="status=1,toolbar=1,location=1,menubar=1,directories=1,resizable=1,scrollbars=1"
theURL = "http://webbooking.louvre-hotels.fr/m/?l=" + l;
window.open (theURL,winName,features);
}