/*****

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

function so_init() {
	
	// cancel script if image container doesn't exist
	if (imgs = d.getElementById("imageContainer") == null) {return;}
	
	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","xfade2.html");
	css.setAttribute("rel","stylesheet");
	css.setAttribute("type","text/css");
	d.getElementsByTagName("head")[0].appendChild(css);

	imgs = d.getElementById("imageContainer").getElementsByTagName("img");
	for(i=0;i<imgs.length;i++) imgs[i].xOpacity = 0;
	imgs[0].style.display = "block";
	imgs[0].xOpacity = .99;
	
	//setTimeout(so_xfade,1000);
}

var img_index = 0;

function so_xfade() {

	
	cOpacity = imgs[current].xOpacity;
	nIndex =  img_index; //imgs[current+1]?current+1:0;

	nOpacity = imgs[nIndex].xOpacity;
	
	cOpacity-=.04; 
	nOpacity+=.04;
	
	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,100);
	} else {
		setTimeout(so_xfade,100);
	}
	
	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) + ")";
	}
	
}

function incImgFade(inc) {
	
	var newindex = (img_index + inc);

	if (newindex==imgs.length) {
		img_index=0;
	} else if(newindex<0) {
		img_index = imgs.length-1;
	} else {
		img_index = newindex
	}
	so_xfade();
}

function showGalleryImg(img_id) {
	var index;
	// find img in array
	for(i=0;i<imgs.length;i++) {
		var img_name_start = imgs[i].src.lastIndexOf("../index.html")+1;
		var img_file = imgs[i].src.substr(img_name_start, (imgs[i].src.length - img_name_start - 4) )
		if ( img_file == img_id) {
			index=i;
			break;
		}
	}

	if (index != undefined) {
		img_index = index;
		so_xfade();
	}
	
}