/*
	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, pause=false;
var numbers = new Array();

(function () {                                                                 
    var swapper =                                                               
        function (a,L,e) {                                                     
            var r = Math.floor(Math.random()*L);                               
            var x = a[e];                                                       
            a[e] = a[r];                                                       
            a[r] = x;                                                           
        };                                                                     
    Array.prototype.shuffle =                                                   
        function () {                                                           
            var i,L;                                                           
            i = L = this.length;                                               
            while (i--) swapper(this,L,i);                                     
        };                                                                     
})();


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

	css = d.createElement('link');
	css.setAttribute('href','css/slideshow2.css');
	css.setAttribute('rel','stylesheet');
	css.setAttribute('type','text/css');
	d.getElementsByTagName('head')[0].appendChild(css);

	imgs = d.getElementById('rotator').getElementsByTagName('img');
	//Shuffle Array 
	for(i=0;i<imgs.length;i++) {
		numbers.push(i);
	}
	numbers.shuffle();		
	//End Shuffle Array
	for(i=1;i<imgs.length;i++) imgs[i].xOpacity = 0;
	imgs[numbers[0]].style.display = 'block';
	imgs[numbers[0]].xOpacity = .99;
	setTimeout(so_xfade,3000);
}

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

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

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

	setOpacity(imgs[numbers[current]]);
	setOpacity(imgs[numbers[nIndex]]);

	if(cOpacity<=0)
	{
		imgs[numbers[current]].style.display = 'none';
		current = nIndex;
		setTimeout(so_xfade,3000);
	}
	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) + ')';
	}
}