if (document.images) {
home_on = new Image();
home_on.src = "img/home_on.jpg";
home_off = new Image();
home_off.src = "img/home_off.jpg";
storia_on = new Image();
storia_on.src = "img/storia_on.jpg";
storia_off = new Image();
storia_off.src = "img/storia_off.jpg";
links_on = new Image();
links_on.src = "img/links_on.jpg";
links_off = new Image();
links_off.src = "img/links_off.jpg";
staff_on = new Image();
staff_on.src = "img/staff_on.jpg";
staff_off = new Image();
staff_off.src = "img/staff_off.jpg";
mappa_on = new Image();
mappa_on.src = "img/mappa_on.jpg";
mappa_off = new Image();
mappa_off.src = "img/mappa_off.jpg";
forum_on = new Image();
forum_on.src = "img/forum_on.jpg";
forum_off = new Image();
forum_off.src = "img/forum_off.jpg";
contatti_on = new Image();
contatti_on.src = "img/contatti_on.jpg";
contatti_off = new Image();
contatti_off.src = "img/contatti_off.jpg";
}
function changeImage(imgNam, newImg) {
	if (document.images)
		document[imgNam].src = newImg;
}
function rollOver(name, status) {
    changeImage(name, eval(name + '_' + status + '.src'));
}


function targetBlank (url) {
  blankWin = window.open(url,'_blank','menubar=yes,toolbar=yes,location=yes,directories=yes,fullscreen=no,titlebar=yes,hotkeys=yes,status=yes,scrollbars=yes,resizable=yes');
}

function PopupCentrata() {
var w = 500;
var h = 400;
var l = Math.floor((screen.width-w)/2);
var t = Math.floor((screen.height-h)/2);
window.open("maps.html","","width=" + w + ",height=" + h + ",top=" + t + ",left=" + l);
}