/*
	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, current2=0, current3=0, current4=0, pause=false;

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

	imgs1 = d.getElementById('slideshow1').getElementsByTagName('img');
	for(i=1;i<imgs1.length;i++) imgs1[i].xOpacity = 0;
	imgs1[0].style.display = 'block';
	imgs1[0].xOpacity = .99;
	setTimeout(so1_xfade,2500);

	imgs2 = d.getElementById('slideshow2').getElementsByTagName('img');
	for(i=1;i<imgs2.length;i++) imgs2[i].xOpacity = 0;
	imgs2[0].style.display = 'block';
	imgs2[0].xOpacity = .99;
	setTimeout(so2_xfade,3500);

	imgs3 = d.getElementById('slideshow3').getElementsByTagName('img');
	for(i=1;i<imgs3.length;i++) imgs3[i].xOpacity = 0;
	imgs3[0].style.display = 'block';
	imgs3[0].xOpacity = .99;
	setTimeout(so3_xfade,3000);

	imgs4 = d.getElementById('slideshow4').getElementsByTagName('img');
	for(i=1;i<imgs4.length;i++) imgs4[i].xOpacity = 0;
	imgs4[0].style.display = 'block';
	imgs4[0].xOpacity = .99;
	setTimeout(so4_xfade,2000);

}

function so1_xfade()
{
	cOpacity = imgs1[current].xOpacity;
	nIndex = imgs1[current+1]?current+1:0;
	nOpacity = imgs1[nIndex].xOpacity;

	cOpacity-=.05;
	nOpacity+=.05;

	imgs1[nIndex].style.display = 'block';
	imgs1[current].xOpacity = cOpacity;
	imgs1[nIndex].xOpacity = nOpacity;

	setOpacity(imgs1[current]);
	setOpacity(imgs1[nIndex]);

	if(cOpacity<=0)
	{
		imgs1[current].style.display = 'none';
		current = nIndex;
		setTimeout(so1_xfade,2500);
	}
	else
	{
		setTimeout(so1_xfade,50);
	}

}

function so2_xfade()
{
	cOpacity = imgs2[current2].xOpacity;
	nIndex = imgs2[current2+1]?current2+1:0;
	nOpacity = imgs2[nIndex].xOpacity;

	cOpacity-=.05;
	nOpacity+=.05;

	imgs2[nIndex].style.display = 'block';
	imgs2[current2].xOpacity = cOpacity;
	imgs2[nIndex].xOpacity = nOpacity;

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

	if(cOpacity<=0)
	{
		imgs2[current2].style.display = 'none';
		current2 = nIndex;
		setTimeout(so2_xfade,3500);
	}
	else
	{
		setTimeout(so2_xfade,50);
	}

}

function so3_xfade()
{
	cOpacity = imgs3[current3].xOpacity;
	nIndex = imgs3[current3+1]?current3+1:0;
	nOpacity = imgs3[nIndex].xOpacity;

	cOpacity-=.05;
	nOpacity+=.05;

	imgs3[nIndex].style.display = 'block';
	imgs3[current3].xOpacity = cOpacity;
	imgs3[nIndex].xOpacity = nOpacity;

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

	if(cOpacity<=0)
	{
		imgs3[current3].style.display = 'none';
		current3 = nIndex;
		setTimeout(so3_xfade,3000);
	}
	else
	{
		setTimeout(so3_xfade,50);
	}

}

function so4_xfade()
{
	cOpacity = imgs4[current4].xOpacity;
	nIndex = imgs4[current4+1]?current4+1:0;
	nOpacity = imgs4[nIndex].xOpacity;

	cOpacity-=.05;
	nOpacity+=.05;

	imgs4[nIndex].style.display = 'block';
	imgs4[current4].xOpacity = cOpacity;
	imgs4[nIndex].xOpacity = nOpacity;

	setOpacity(imgs4[current4]);
	setOpacity(imgs4[nIndex]);

	if(cOpacity<=0)
	{
		imgs4[current4].style.display = 'none';
		current4 = nIndex;
		setTimeout(so4_xfade,2000);
	}
	else
	{
		setTimeout(so4_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) + ')';
	}