/*****

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

function so_init() {
	if(!d.getElementById("photos"))return;
	
	imgs = d.getElementById("photos").getElementsByTagName("img");
	buttons = d.getElementById("photo-buttons").getElementsByTagName("a");
	for(i=1;i<imgs.length;i++) imgs[i].xOpacity = 0;
	buttons[0].className = "selected-img";
	imgs[0].style.display = "block";
	imgs[0].xOpacity = .99;
	setTimeout("so_xfade()",4000);
}

function so_xfade() {
	cOpacity = imgs[current].xOpacity;
	nIndex = imgs[current + 1] ? current + 1 : 0;
	bIndex = buttons[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]);
	buttons[current].className = "";
	buttons[bIndex].className = "selected-img";
	
	if (cOpacity <= 0) {
		imgs[current].style.display = "none";
		current = nIndex;
		setTimeout("so_xfade()", 4000);
	}
	else {
		setTimeout("so_xfade()", 0.5);
	}
}

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 imgset(imgnumber){
	for(i=0;i<imgs.length;i++){
		imgs[i].style.display = "none";
		imgs[i].style.opacity = 0;
		buttons[i].className = "";
	}
	imgs[imgnumber].style.display = "block";
	imgs[imgnumber].style.opacity = 100;
	buttons[imgnumber].className = "selected-img";
}