var preloadimg;

window.onload=function(){
if(!document.getElementById || !document.getElementsByTagName) return;
attivaGallery();    //ingrandimento nella stessa pagina
attivaFade();       //effetto rollover sulle miniature
}

function attivaGallery(){
var links=document.getElementById("minipics").getElementsByTagName("a");
for(var i=0;i<links.length;i++)
    links[i].onclick=function(){Show(this);return(false)};
}

function Show(obj){
var bigimg=document.getElementById("bigimage");
var imagepath=obj.getAttribute("href");
var smallimg=obj.getElementsByTagName("img")[0];
bigimg.style.visibility="hidden";
bigimg.src=imagepath;
bigimg.title=smallimg.title;
bigimg.alt=smallimg.alt;
preloadimg=new Image();        //precarica l' immagine prima dell' effetto fade
preloadimg.src=imagepath;
Controlla();
bigimg.style.visibility="visible";
fadeIn("bigimage",0);
}

function attivaFade(){
var imgs=document.getElementById("minipics").getElementsByTagName("img");
for(var i=0;i<imgs.length;i++){
    imgs[i].onmouseover=function(){setOpacity(this,40)};
    imgs[i].onmouseout=function(){setOpacity(this,100)};
    }
}

function Controlla(){
if((preloadimg.width!=0) && (preloadimg.height!=0))
    return;
else window.setTimeout("Controlla()",100);
}

function setOpacity(obj,opacity){
opacity=(opacity==100) ? 99.999 : opacity;
obj.style.filter = "alpha(opacity:"+opacity+")";  // IE/Win
obj.style.KHTMLOpacity = opacity/100; // Safari<1.2, Konqueror
obj.style.MozOpacity = opacity/100;   // Older Mozilla and Firefox
obj.style.opacity = opacity/100;      // Safari 1.2, newer Firefox and Mozilla, CSS3
}

function fadeIn(objId,opacity) {
obj = document.getElementById(objId);
if(opacity <= 100){
  setOpacity(obj,opacity);
  opacity += 10;
  window.setTimeout("fadeIn('"+objId+"',"+opacity+")", 100);
  }
}

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];}}
}

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;
}
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];}
}
function MM_findObj(n, d) { //v4.01
  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);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}
function MM_displayStatusMsg(msgStr) { //v1.0
  status=msgStr;
  document.MM_returnValue = true;
}


function tmt_findObj(n){
var x,t; if((n.indexOf("?"))>0&&parent.frames.length){t=n.split("?");
x=eval("parent.frames['"+t[1]+"'].document.getElementById('"+t[0]+"')");
}else{x=document.getElementById(n)}return x;
}


function MM_showHideLayers() { //v3.0A Modified by Al Sparber and Massimo Foti for NN6 Compatibility

var i,p,v,obj,args=MM_showHideLayers.arguments;if(document.getElementById){
for (i=0; i<(args.length-2); i+=3){ obj=tmt_findObj(args[i]);v=args[i+2];
v=(v=='show')?'visible':(v='hide')?'hidden':v;
if(obj)obj.style.visibility=v;}} else{
for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
obj.visibility=v; }}
}