bname = navigator.appName;
	bver = parseInt(navigator.appVersion);
	var isNS  = (bname == 'Netscape' && bver >= 4);
	var ie4 = (bname == "Microsoft Internet Explorer" && bver >= 4);
	var left_offset = 0;
	
	if (isNS || ie4)
	{
	ico1on = new Image();
	ico1on.src = "/media/images/navigator_top/elezioni_on.gif";
	ico1off = new Image();
	ico1off.src = "/media/images/navigator_top/elezioni_off.gif";
		
	
   }
	
function accendi_img(nome) {
	if (isNS || ie4)
		{document[nome].src = eval(nome + "on.src");}
	}
	
	function spegni_img(nome) {
	if (isNS || ie4)
		{document[nome].src = eval(nome + "off.src");}
	}
	
//Funzioni relative all'accenzione/spegnimento/posizionamento dei Layer	
function move_layers () {
	if (isNS)
		{screen_w = window.innerWidth;}
	else
		{screen_w = document.body.clientWidth;}

	if (screen_w > 596)
		{left_offset = (screen_w - 596)/2;}
	else
		{left_offset = 0;}
		
	if (isNS){
		document.layers['layer1'].left = -76 + left_offset;
		document.layers['layer1'].top = 304;
		document.layers['layer2'].left = 13 + left_offset;
		document.layers['layer2'].top = 304;
		document.layers['layer3'].left = 102 + left_offset;
		document.layers['layer3'].top = 304;
		}else{
		document.all['layer1'].style.pixelLeft = -68 + left_offset;
		document.all['layer1'].style.pixelTop = 304;
		document.all['layer2'].style.pixelLeft = 21 + left_offset;
		document.all['layer2'].style.pixelTop = 304;
		document.all['layer3'].style.pixelLeft = 110 + left_offset;
		document.all['layer3'].style.pixelTop = 304;
		}
}

function chiudi_tutto() {
	if (isNS)
		{
		document.layers['layer1'].visibility="hide";
		document.layers['layer2'].visibility="hide";
		document.layers['layer3'].visibility="hide";
		}else{
		document.all['layer1'].style.visibility="hidden";
		document.all['layer2'].style.visibility="hidden";
		document.all['layer3'].style.visibility="hidden";
		}
}

function accendi_id(num) {
	chiudi_tutto();
	move_layers();
	if (isNS)
		{document.layers[num].visibility="show";}
	else
		{document.all[num].style.visibility="visible";}
}

function spegni_id(num) {
	move_layers();
	if (isNS)
		{document.layers[num].visibility="hide";}
	else
		{document.all[num].style.visibility="hidden";}
}