var piccolinoon = new Image();
piccolinoon.src = "images/piccolino_on.gif";
var piccolinooff = new Image();
piccolinooff.src = "images/piccolino_off.gif";

var barandgrillon = new Image();
barandgrillon.src = "images/barandgrill_on.gif";
var barandgrilloff = new Image();
barandgrilloff.src = "images/barandgrill_off.gif";

var bankon = new Image();
bankon.src = "images/bank_on.gif";
var bankoff = new Image();
bankoff.src = "images/bank_off.gif";

var zincon = new Image();
zincon.src = "images/zinc_on.gif";
var zincoff = new Image();
zincoff.src = "images/zinc_off.gif";

function act(imgName)
{
	if (document.images)
	 document[imgName].src = eval(imgName + "on.src");
}

function inact(imgName)
{
	if (document.images)
	 document[imgName].src = eval(imgName + "off.src");
}