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;
var vImages = [ './images/planetarygearboxes.jpg', './images/slewinggearboxes.jpg', './images/planetarywinchdrives.jpg' ];

function so_init() 
{
	var i = 0;
	var j = 0;

	var div = d.createElement("DIV"); div.id = "imageContainer";
	d.getElementById("pgimg").innerHTML = "";
	d.getElementById("pgimg").appendChild(div);

	for(i=vImages.length-1; i>=0; i--)
	{
		imgs[i] = new Image();
		imgs[i].src = vImages[i];
		div.appendChild(imgs[i]); 
	}
	
	for(i=1;i<imgs.length;i++) imgs[i].xOpacity = 0;
	imgs[0].style.display = "block";
	imgs[0].xOpacity = .99;
	
	setTimeout(so_xfade,1500);
}

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,1000);
	}
	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) + ")";
	}
	
}