/*****

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(), zInterval = null, current=0, pause=false;

function CenterImage(img)
{
  
	var container = document.getElementById('imageContainer');

	if (container.offsetWidth > 200) //center only for the larger frame
	{

    var margin_t = (container.offsetHeight - img.offsetHeight) / 2;
		var margin_l = (container.offsetWidth - img.offsetWidth) / 2;

		img.style.top = margin_t + 'px';
    img.style.left = margin_l + 'px';
		
		img.style.zIndex = '-1';

	}
	
	
}

function so_init() 
{

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

	// DON'T FORGET TO GRAB THIS FILE AND PLACE IT ON YOUR SERVER IN THE SAME DIRECTORY AS THE JAVASCRIPT!
	// http://slayeroffice.com/code/imageCrossFade/xfade2.css
	//css = d.createElement("link");
	//css.setAttribute("href","anim.css");
	//css.setAttribute("rel","stylesheet");
	//css.setAttribute("type","text/css");
	//d.getElementsByTagName("head")[0].appendChild(css);

	imgs = d.getElementById("imageContainer").getElementsByTagName("img");
	
	for(i=1;i<imgs.length;i++)
	{
		imgs[i].xOpacity = 0;
	}

	imgs[0].style.display = "block";
	imgs[0].xOpacity = .99;
  CenterImage(imgs[0]);
	
	setTimeout(so_xfade,1000);
	
}

function so_xfade() 
{
	cOpacity = imgs[current].xOpacity;
	nIndex = imgs[current+1]?current+1:0;

	nOpacity = imgs[nIndex].xOpacity;
	
	cOpacity-=.05; 
	nOpacity+=.05;

  CenterImage(imgs[nIndex]);
	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) + ")";
	}
	
}