/*****

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


*****/


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

var d=document;
var imgs = new Array();
var zInterval = null;
var currentImage=0;
var currentContainer=1;
var pause=false;

var nMilisecondsTransition = 2000;

var nTotalSlides = 19;

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);
	
	for(n=1;n<=nTotalSlides;n++)
	{
		imgs[n] = d.getElementById("imageContainer" + n).getElementsByTagName("img");
		
		for(i=1;i<imgs[n].length;i++)
			imgs[n][i].xOpacity = 0;

		imgs[n][0].style.display = "block";
		imgs[n][0].xOpacity = .99;
		imgs[n].estado = "parado";

	}

}

function IniciaSlide(nContainer) {
	
	if (imgs[currentContainer].estado == "en marcha")
	{
		clearTimeout(imgs[currentContainer].nTimer);
		imgs[currentContainer].estado = "parado"
	}
	currentContainer = nContainer;
	currentImage = 0;
	
	imgs[currentContainer].nTimer = setTimeout(so_xfade,nMilisecondsTransition);
	imgs[currentContainer].estado = "en marcha";
}

function ParaSlide() {
	if (imgs.length > 0 )
	{
		if (imgs[currentContainer].estado == "en marcha")
		{
			clearTimeout(imgs[currentContainer].nTimer);
			imgs[currentContainer].estado = "parado"
		}
	}
}

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

	nOpacity = imgs[currentContainer][nIndex].xOpacity;
	
	cOpacity-=.05; 
	nOpacity+=.05;
	
	imgs[currentContainer][nIndex].style.display = "block";
	imgs[currentContainer][currentImage].xOpacity = cOpacity;
	imgs[currentContainer][nIndex].xOpacity = nOpacity;
	
	setOpacity(imgs[currentContainer][currentImage]); 
	setOpacity(imgs[currentContainer][nIndex]);
	
	if(cOpacity<=0) {
		imgs[currentContainer][currentImage].style.display = "none";
		currentImage = nIndex;
		imgs[currentContainer].nTimer = setTimeout(so_xfade,nMilisecondsTransition);
	} else {
		imgs[currentContainer].nTimer = 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) + ")";
	}
	
}