nt40 = (document.layers) ? true:false;
ie40 = (document.all) ? true:false;
if (nt40 == false && ie40 == false)
	alert ("pagina valida solo per IE4.0 e NT4.0 o superiori")
document.onmousedown =giu;
if (nt40)
document.captureEvents (Event.MOUSEDOWN);


function cambia(div, nomeImg, oggImg)
{	if (nt40 && div!=null) eval('document.'+div+'.document.images["'+nomeImg+'"].src ='+oggImg+'.src');
	else
	document.images[nomeImg].src = eval(oggImg+'.src');
}
function caricaFotoPiccola(urlFoto)
{
var frame = window.open("",'nomeFrame','toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,width=200,height=274');
frame.location=urlFoto;
}
function caricaFoto(urlFoto)
{
var frame = window.open("",'nomeFrame','toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,width=460,height=300');
frame.location=urlFoto;
}

function giu(e)
{
if (nt40)
	{mouseX=e.pageX;
	 mouseY=e.pageY;

	}
if (ie40)
	{mouseX=event.x;
	 mouseY=event.y;
	}

}	
function compare(box, largo, alto)
{	
	if (nt40)
	{	
		if ((largFinestra-mouseX) >= (largo+10))
		document.layers[box].left=mouseX+10;
		else
		    {
			if (mouseX>=largo)		    
			{mouseX=mouseX-largo;
			document.layers[box].left=mouseX-10;}
	 	     else
			{mouseX=(largFinestra-largo)/2;
			 document.layers[box].left=mouseX;}
		    }	
		if (altFinestra >= (alto+10))
			document.layers[box].top=mouseY-alto-10;
		else
			{mouseY=mouseY+alto+10;
			document.layers[box].top=mouseY+alto+10;}
		document.layers[box].visibility="show";
	}
	if (ie40)
	{	
		document.all[box].style.visibility="visible";
		if ((largFinestra-mouseX) >= (largo+10))
		document.all[box].style.posLeft=mouseX+10;
		else
		    {if (mouseX>=largo)
			{mouseX=mouseX-largo;
			 document.all[box].style.posLeft=mouseX-10;}
	 	     else
			 {mouseX=(largFinestra-largo)/2;
			 document.all[box].style.posLeft=mouseX;}
		    }
		if (altFinestra >= (alto+10))
			document.all[box].style.posTop=mouseY-alto-10;
		else
			{mouseY=mouseY+alto+10;
			document.all[box].style.posTop=mouseY;}
	}
}
function scompare(box)
{	if (nt40)
	document.layers[box].visibility="hide";
	if (ie40)
	document.all[box].style.visibility="hidden";
}
function nascondi()
{	if (nt40)
	document.layers['box2'].visibility="hide";
	if (ie40)
	document.all['box2'].style.visibility="hidden";
}