if (document.images)
	{   
												
		chion = new Image(138, 40);
		chion.src = "img/on_chisiamo.gif";
		chioff = new Image(138, 40);
		chioff.src = "img/off_chisiamo.gif";
		
		prodon = new Image(100, 40);
		prodon.src = "img/on_prodotti.gif";
		prodoff = new Image(100, 40);
		prodoff.src = "img/off_prodotti.gif";

		refeon = new Image(86, 40);
		refeon.src = "img/on_news.gif";
		refeoff = new Image(86, 40);
		refeoff.src = "img/off_news.gif";

		contattion = new Image(100, 40);
		contattion.src = "img/on_contatti.gif";
		contattioff = new Image(100, 40);
		contattioff.src = "img/off_contatti.gif";
		
		homeon = new Image(90, 40);
		homeon.src = "img/on_home.gif";
		homeoff = new Image(90, 40);
		homeoff.src = "img/off_home.gif";
		
		parton = new Image(66, 16);
		parton.src = "img/on_part.gif";
		partoff = new Image(66, 16);
		partoff.src = "img/off_part.gif";

	}


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

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