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

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

	css=d.createElement('link');
	css.setAttribute('href','xfade2.css');
	css.setAttribute('rel','stylesheet');
	css.setAttribute('type','text/css');
	d.getElementsByTagName('head')[0].appendChild(css);

	imgs=d.getElementById('slideshow').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,3000);
}

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,3000);
	}
	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) + ')';
	}
}