/*
   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;

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

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

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

   setTimeout(so_xfade,7000);
}

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,6000);
   }
   else
   {
      setTimeout(so_xfade,75);
   }

   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) + ')';
   }
}