/*  Funzioni per il testo che scorre */
function lib_bwcheck(){ //Browsercheck (needed)
	this.ver=navigator.appVersion
	this.agent=navigator.userAgent
	this.dom=document.getElementById?1:0
	this.opera5=this.agent.indexOf("Opera 5")>-1
	this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera5)?1:0; 
	this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera5)?1:0;
	this.ie4=(document.all && !this.dom && !this.opera5)?1:0;
	this.ie=this.ie4||this.ie5||this.ie6
	this.mac=this.agent.indexOf("Mac")>-1
	this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0; 
	this.ns4=(document.layers && !this.dom)?1:0;
	this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera5)
	return this
}
var bw=new lib_bwcheck()


/*** variables to configure... ***/

//var numScrollPages = 5         //Set the number of pages (layers) here.

var transitionOut = 1;         //The 'out' effect... 0= no effect, 1= fade
var transitionIn = 2;          //The 'in' effect... 0= no effect, 1= fade, 2= slide
var slideAcceleration = 0.4;   //If you use the slide animation, set this somewhere between 0 and 1.

/*** Please note that there are no effects available in ns4 and ie4, or explorers on the Mac! ***/


if(document.layers){ //NS4 resize fix...
	scrX= innerWidth; scrY= innerHeight;
	onresize= function(){if(scrX!= innerWidth || scrY!= innerHeight){history.go(0)} }
}

//object constructor...
function scrollerobj(obj,nest){
	nest = (!nest)?"":'document.'+nest+'.'
	this.elm = bw.ie4?document.all[obj]:bw.ns4?eval(nest+'document.'+obj):document.getElementById(obj)
	this.css = bw.ns4?this.elm:this.elm.style
	this.doc = bw.ns4?this.elm.document:document
	this.obj = obj+'scrollerobj'; eval(this.obj+'=this')
	this.x = (bw.ns4||bw.opera5)?this.css.left:this.elm.offsetLeft
	this.y = (bw.ns4||bw.opera5)?this.css.top:this.elm.offsetTop
	this.w = (bw.ie4||bw.ie5||bw.ie6||bw.ns6)?this.elm.offsetWidth:bw.ns4?this.elm.clip.width:bw.opera5?this.css.pixelWidth:0
	this.h = (bw.ie4||bw.ie5||bw.ie6||bw.ns6)?this.elm.offsetHeight:bw.ns4?this.elm.clip.height:bw.opera5?this.css.pixelHeight:0
}

//object methods...
scrollerobj.prototype.moveTo = function(x,y){
	if(x!=null){this.x=x; this.css.left=x}
	if(y!=null){this.y=y; this.css.top=y}
}
scrollerobj.prototype.moveBy = function(x,y){this.moveTo(this.x+x,this.y+y)}
scrollerobj.prototype.hideIt = function(){this.css.visibility='hidden'}
scrollerobj.prototype.showIt = function(){this.css.visibility='visible'}

/****************************************************************
scroll functions...
****************************************************************/
var scrollTimer = null;
function scroll(step){
	clearTimeout(scrollTimer);
	if ( !busy && (step<0&&activePage.y+activePage.h>scroller1.h || step>0&&activePage.y<0) ){
		activePage.moveBy(0,step);
		scrollTimer = setTimeout('scroll('+step+')',110);
	}
}
function stopScroll(){
	clearTimeout(scrollTimer);
}

/****************************************************************
activating the correct layers...
****************************************************************/
var activePage = null;
var busy = 0;
function activate(num){
	if (activePage!=pages[num] && !busy){
		busy = 1;
		if (transitionOut==0 || !bw.opacity){ activePage.hideIt(); activateContinue(num); }
		else if (transitionOut==1) activePage.blend('hidden', 'activateContinue('+num+')');
	}
}
function activateContinue(num){
	busy = 1;
	activePage = pages[num];
	activePage.moveTo(0,0);
	if (transitionIn==0 || !bw.opacity){ activePage.showIt(); busy=0; }
	else if (transitionIn==1) activePage.blend('visible', 'busy=0');
	else if (transitionIn==2) activePage.slide(0, slideAcceleration, 40, 'busy=0');
}


/****************************************************************
Slide methods...
****************************************************************/
scrollerobj.prototype.slide = function(target, acceleration, time, fn){
	this.slideFn= fn?fn:null;
	this.moveTo(0,scroller1.h);
	if (bw.ie4&&!bw.mac) this.css.filter = 'alpha(opacity=100)';
	if (bw.ns6) this.css.MozOpacity = 1;
	this.showIt();
	this.doSlide(target, acceleration, time);
}
scrollerobj.prototype.doSlide = function(target, acceleration, time){
	this.step = Math.round(this.y*acceleration);
	if (this.step<1) this.step = 1;
	if (this.step>this.y) this.step = this.y;
	this.moveBy(0, -this.step);
	if (this.y>0) this.slideTim = setTimeout(this.obj+'.doSlide('+target+','+acceleration+','+time+')', time);
	else {	
		eval(this.slideFn);
		this.slideFn = null;
	}
}


/****************************************************************
Opacity methods...
****************************************************************/
scrollerobj.prototype.blend= function(vis, fn){
	if (bw.ie5||bw.ie6 && !bw.mac) {
		if (vis=='visible') this.css.filter= 'blendTrans(duration=0.1)';
		else this.css.filter= 'blendTrans(duration=0.1)'; //durata del fade
		this.elm.onfilterchange = function(){ eval(fn); };
		this.elm.filters.blendTrans.apply();
		this.css.visibility= vis;
		this.elm.filters.blendTrans.play();
	}
	else if (bw.ns6 || bw.ie&&!bw.mac){
		this.css.visibility= 'visible';
		vis=='visible' ? this.fadeTo(100, 7, 40, fn) : this.fadeTo(0, 9, 40, fn);
	}
	else {
		this.css.visibility= vis;
		eval(fn);
	}
};

scrollerobj.prototype.op= 100;
scrollerobj.prototype.opacityTim= null;
scrollerobj.prototype.setOpacity= function(num){
	this.css.filter= 'alpha(opacity='+num+')';
	this.css.MozOpacity= num/100;
	this.op= num;
}
scrollerobj.prototype.fadeTo= function(target, step, time, fn){
	clearTimeout(this.opacityTim);
	this.opacityFn= fn?fn:null;
	this.op = target==100 ? 0 : 100;
	this.fade(target, step, time);
}
scrollerobj.prototype.fade= function(target, step, time){
	if (Math.abs(target-this.op)>step){
		target>this.op? this.setOpacity(this.op+step):this.setOpacity(this.op-step);
		this.opacityTim= setTimeout(this.obj+'.fade('+target+','+step+','+time+')', time);
	}
	else {
		this.setOpacity(target);
		eval(this.opacityFn);
		this.opacityFn= null;
	}
}


/**************************************************************
Init function...
**************************************************************/
var pageslidefadeLoaded = 0;
function initPageSlideFade(){

var ie=document.all
var dom=document.getElementById
var ns4=document.layers

if (!dom&&!ie&&!ns4)
return
crossobj=(dom)?document.getElementById("divScroller1").style : ie? document.all.divScroller1 : document.divScroller1
scroll_left=(ie)? (document.body.clientWidth-760)/2 : (innerWidth-760)/2
if (scroll_left>0){
crossobj.left=scroll_left+400
}
else{
crossobj.left=400
}

crossobj.visibility=(dom||ie)? "visible" : "show"

scroller1 = new scrollerobj('divScroller1');
	
	pages = new Array();
	pages[0] = null;
	for (var i=1; i<=numScrollPages; i++){
		pages[i] = new scrollerobj('dynPage'+i, 'divScroller1');
		pages[i].moveTo(0,0);
	}
	bw.opacity = ( bw.ie && !bw.ie4 && navigator.userAgent.indexOf('Windows')>-1 ) || bw.ns6
	if (bw.ie5||bw.ie6 && !bw.mac) pages[1].css.filter= 'blendTrans(duration=0.9)'; // Loads the windows 9.x filters module.
	activateContinue(1);

	if (bw.ie) for(var i=0;i<document.links.length;i++) document.links[i].onfocus=document.links[i].blur;
	pageslidefadeLoaded = 1;
}
//if the browser is ok, the script is started onload..

if(bw.bw && !pageslidefadeLoaded) onload = initPageSlideFade;
function regenerate(){
window.location.reload()
}
onresize = regenerate;



/* Funzioni per la gestione delle immagini */

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_findObj(n, d) { //v4.0
  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);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

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];}
}
//-->