var preloadimg;

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

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);
	}
}

//-----------------------------
if (window.Event)
	document.captureEvents(Event.MOUSEUP);

function nocontextmenu() {
	event.cancelBubble = true, event.returnValue = false;
	return false;
}

function norightclick(e) {
	if (window.Event) {
    	if (e.which == 2 || e.which == 3) return false;
	}
	else if (event.button == 2 || event.button == 3) {
    	event.cancelBubble = true, event.returnValue = false;
		return false;
	}
}

if (document.layers)
	document.captureEvents(Event.MOUSEDOWN);

document.oncontextmenu = nocontextmenu;
document.onmousedown = norightclick;
document.onmouseup = norightclick;

//----------------------------------