function book(hp1,hp2,l)
{
	var windowWidth=560;
	var windowHeight=600;
    var centerWidth = (window.screen.width - windowWidth) / 2;
    var centerHeight = (window.screen.height - windowHeight) / 2;
    newWindow = window.open("http://www.milanomarittima.it/_bookingengine/book.php?h="+hp1+"&c=1&t=true&hash="+hp2+"&l="+l,"Booking Online", 'resizable=1,scrollbars=true,width='+windowWidth+',height=' + windowHeight+',left='+centerWidth+',top='+centerHeight);
    newWindow.focus();
    return newWindow.name;
}