//carica immagini nella cache
function MM_preloadImages() { //v3.0
  var d=document;
	if(d.images){
	  if(!d.MM_p) d.MM_p=new Array();	
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments;
		for(i=0; i<a.length; i++)
      if (a[i].indexOf("#")!=0){
			  d.MM_p[j]=new Image();
				d.MM_p[j++].src=a[i];
			}
	}
}

//ripristina un'immagine cambiata
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr
	for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++)
	  x.src=x.oSrc
}

//trova il tag di un'immagine
function MM_findObj(n, d) { //v3.0
  var p,i,x;
	if(!d) d=document;
	if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document;
		n=n.substring(0,p);
	}
  if(!(x=d[n])&&d.all)
	  x=d.all[n];
	for(i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i>d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
	return x;
}

//scambia un'immagine
function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments;
	document.MM_sr=new Array();
	for(i=0;i<(a.length-2);i+=3)
    if((x=MM_findObj(a[i]))!=null){
		  document.MM_sr[j++]=x;
			if(!x.oSrc) x.oSrc=x.src;
			x.src=a[i+2];
		}
}