/*
	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_top_left,false):window.attachEvent('onload',so_init_top_left);

var d=document, imgs_top_left = new Array(), zInterval_top_left = null, current_top_left=0, pause_top_left=false;
var fadetime_top_left = 3000;
function so_init_top_left()
{
	if(!d.getElementById || !d.createElement)return;

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

	setTimeout(so_xfade_top_left,fadetime_top_left);
}

function so_xfade_top_left()
{
	cOpacity_top_left = imgs_top_left[current_top_left].xOpacity;
	nIndex_top_left = imgs_top_left[current_top_left+1]?current_top_left+1:0;
	nOpacity_top_left = imgs_top_left[nIndex_top_left].xOpacity;

	cOpacity_top_left-=.05;
	nOpacity_top_left+=.05;

	imgs_top_left[nIndex_top_left].style.display = 'block';
	imgs_top_left[current_top_left].xOpacity = cOpacity_top_left;
	imgs_top_left[nIndex_top_left].xOpacity = nOpacity_top_left;

	setOpacity(imgs_top_left[current_top_left]);
	setOpacity(imgs_top_left[nIndex_top_left]);

	if(cOpacity_top_left<=0)
	{
		imgs_top_left[current_top_left].style.display = 'none';
		current_top_left = nIndex_top_left;
		setTimeout(so_xfade_top_left,fadetime_top_left);
	}
	else
	{
		setTimeout(so_xfade_top_left,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) + ')';
	}
}