/*
	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, imgs1 = new Array(), imgs2 = new Array(), imgs3 = new Array(), zInterval = null, current1=0, current2=0, current3=0, pause=false;

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

	css = d.createElement('link');
	css.setAttribute('href','slideshow.css');
	css.setAttribute('rel','stylesheet');
	css.setAttribute('type','text/css');
	d.getElementsByTagName('head')[0].appendChild(css);
	
	imgs1 = d.getElementById('rotator1').getElementsByTagName('img');
	for(i=1;i<imgs1.length;i++) imgs1[i].xOpacity = 0;
	imgs1[0].style.display = 'block';
	imgs1[0].xOpacity = .99;

	imgs2 = d.getElementById('rotator2').getElementsByTagName('img');
	for(i=1;i<imgs2.length;i++) imgs2[i].xOpacity = 0;
	imgs2[0].style.display = 'block';
	imgs2[0].xOpacity = .99;

	imgs3 = d.getElementById('rotator3').getElementsByTagName('img');
	for(i=1;i<imgs3.length;i++) imgs3[i].xOpacity = 0;
	imgs3[0].style.display = 'block';
	imgs3[0].xOpacity = .99;
	
	setTimeout(so_xfade1,1000);
	setTimeout(so_xfade2,3000);
	setTimeout(so_xfade3,5000);
}

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 so_xfade1()
{
	cOpacity1 = imgs1[current1].xOpacity;
	nIndex1 = imgs1[current1+1]?current1+1:0;
	nOpacity1 = imgs1[nIndex1].xOpacity;

	cOpacity1-=.05;
	nOpacity1+=.05;

	imgs1[nIndex1].style.display = 'block';
	imgs1[current1].xOpacity = cOpacity1;
	imgs1[nIndex1].xOpacity = nOpacity1;

	setOpacity(imgs1[current1]);
	setOpacity(imgs1[nIndex1]);

	if(cOpacity1<=0)
	{
		imgs1[current1].style.display = 'none';
		current1 = nIndex1;
		setTimeout(so_xfade1,5000);
	}
	else
	{
		setTimeout(so_xfade1,50);
	}
}

function so_xfade2()
{
	cOpacity2 = imgs2[current2].xOpacity;
	nIndex2 = imgs2[current2+1]?current2+1:0;
	nOpacity2 = imgs2[nIndex2].xOpacity;

	cOpacity2-=.05;
	nOpacity2+=.05;

	imgs2[nIndex2].style.display = 'block';
	imgs2[current2].xOpacity = cOpacity2;
	imgs2[nIndex2].xOpacity = nOpacity2;

	setOpacity(imgs2[current2]);
	setOpacity(imgs2[nIndex2]);

	if(cOpacity2<=0)
	{
		imgs2[current2].style.display = 'none';
		current2 = nIndex2;
		setTimeout(so_xfade2,5000);
	}
	else
	{
		setTimeout(so_xfade2,50);
	}
}

function so_xfade3()
{
	cOpacity3 = imgs3[current3].xOpacity;
	nIndex3 = imgs3[current3+1]?current3+1:0;
	nOpacity3 = imgs3[nIndex3].xOpacity;

	cOpacity3-=.05;
	nOpacity3+=.05;

	imgs3[nIndex3].style.display = 'block';
	imgs3[current3].xOpacity = cOpacity3;
	imgs3[nIndex3].xOpacity = nOpacity3;

	setOpacity(imgs3[current3]);
	setOpacity(imgs3[nIndex3]);

	if(cOpacity3<=0)
	{
		imgs3[current3].style.display = 'none';
		current3 = nIndex3;
		setTimeout(so_xfade3,5000);
	}
	else
	{
		setTimeout(so_xfade3,50);
	}
}