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

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

	imgs_a = d.getElementById('rotator').getElementsByTagName('img');
	
	// only images with actual date:
	var currentTime = new Date();
	var j = 0;
	for(i=0; i<imgs_a.length; i++) {
    	var bannerDate = new Date(imgs_a[i].id);
		if(bannerDate.getTime() > currentTime.getTime()) {
			imgs[j++] = imgs_a[i];	
		}
	} 
  
  //current=Math.floor(Math.random()*imgs.length); //nahodne vyberanie
  
  current= 0;
	for(i=0;i<imgs.length;i++){
    imgs[i].xOpacity = 0;
    imgs[i].style.display = 'none';
  } 
	imgs[current].style.display = 'block';
	imgs[current].xOpacity = .99;
	
	setTimeout(so_xfade,4000);
}

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

	cOpacity-=.04;
	nOpacity+=.04;

	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,4000);
	}
	else
	{
		setTimeout(so_xfade,70);
	}

	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) + ')';
	}
}