/*****

Image Cross Fade Redux
Version 1.0
Last revision: 02.15.2006
steve@slayeroffice.com

Please leave this notice intact. 

Rewrite of old code found here: http://slayeroffice.com/code/imageCrossFade/index.html


*****/
	var currentPhoto = 0;
	var secondPhoto = 1;
	
	var FADE_STEP = 2;//2
	var FADE_INTERVAL = 100;//10
	var pause = false; //false;
	var durata = 5000;
	

	function init() {
		currentOpacity[0]=99;
		for(i=1;i<imageArray.length;i++)currentOpacity[i]=0;
		mHTML="";
		for(i=0;i<imageArray.length;i++)mHTML+="<div id=\"photo\" name=\"photo\" class=\"mPhoto\"><img src=\"" + imageArray[i]  +"\"></div>";
		document.getElementById("mContainer").innerHTML = mHTML;

		if(document.all) {
			document.getElementsByName("photo")[currentPhoto].style.filter="alpha(opacity=100)";
		} else {
			document.getElementsByName("photo")[currentPhoto].style.MozOpacity = .99;
		}

		mInterval = setInterval("crossFade()",FADE_INTERVAL);
	}

	function crossFade() {
		if(pause)return;

		currentOpacity[currentPhoto]-=FADE_STEP;
		currentOpacity[secondPhoto] += FADE_STEP;

		if(document.all) {
			document.getElementsByName("photo")[currentPhoto].style.filter = "alpha(opacity=" + currentOpacity[currentPhoto] + ")";
			document.getElementsByName("photo")[secondPhoto].style.filter = "alpha(opacity=" + currentOpacity[secondPhoto] + ")";
		} else {
			document.getElementsByName("photo")[currentPhoto].style.MozOpacity = currentOpacity[currentPhoto]/100;
			document.getElementsByName("photo")[secondPhoto].style.MozOpacity =currentOpacity[secondPhoto]/100;
		}

		if(currentOpacity[secondPhoto]/100>=.98) {
			currentPhoto = secondPhoto;
			secondPhoto++;
			if(secondPhoto == imageArray.length)secondPhoto=0;
			pause = true;
			xInterval = setTimeout("pause=false",durata);
		}
	}

	function doPause()  {
		if(pause) {
			pause = false;
			document.getElementById("pauseBtn").value = "pause";
		} else {
			pause = true;
			document.getElementById("pauseBtn").value = "play";
		}
	}		
	

window.addEventListener?window.addEventListener("load",so_init,false):window.attachEvent("onload",so_init);

var d=document, imgs = new Array(), zInterval = null, current=0, pause=false;

function so_init() {
	if(!d.getElementById || !d.createElement)return;

	// DON'T FORGET TO GRAB THIS FILE AND PLACE IT ON YOUR SERVER IN THE SAME DIRECTORY AS THE JAVASCRIPT!
	// http://slayeroffice.com/code/imageCrossFade/xfade2.css
	css = d.createElement("link");
	css.setAttribute("href","../css/xfade2.css");
	css.setAttribute("rel","stylesheet");
	css.setAttribute("type","text/css");
	d.getElementsByTagName("head")[0].appendChild(css);

	imgs = d.getElementById("imageContainer").getElementsByTagName("img");
	for(i=1;i<imgs.length;i++) imgs[i].xOpacity = 0;
	imgs[0].style.display = "block";
	imgs[0].xOpacity = .99;
	
	setTimeout(so_xfade,durata);
}

function so_xfade() {
	cOpacity = imgs[current].xOpacity;
	nIndex = imgs[current+1]?current+1:0;

	nOpacity = imgs[nIndex].xOpacity;
	
	cOpacity-=.05; 
	nOpacity+=.05;
	
	imgs[nIndex].style.display = "block";
	imgs[current].xOpacity = cOpacity;
	imgs[nIndex].xOpacity = nOpacity;
	
	setOpacity(imgs[current]); 
	setOpacity(imgs[nIndex]);
	
	if(cOpacity<=0) {
		imgs[current].style.display = "none";
		current = nIndex;
		setTimeout(so_xfade,durata);
	} else {
		setTimeout(so_xfade,50);
	}
	
	function setOpacity(obj) {
		if(obj.xOpacity>.99) {
			obj.xOpacity = .99;
			return;
		}
		obj.style.opacity = obj.xOpacity;
		obj.style.MozOpacity = obj.xOpacity;
		obj.style.filter = "alpha(opacity=" + (obj.xOpacity*100) + ")";
	}
	
}