/*****

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

    if(d.getElementById("imageSlideShow")) {
      css = d.createElement("link");
      css.setAttribute("href","imagecrossfade.css");
      css.setAttribute("rel","stylesheet");
      css.setAttribute("type","text/css");
      d.getElementsByTagName("head")[0].appendChild(css);

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

function so_start() {
    if(d.getElementById("imageSlideShow")) {
      setTimeout(so_xfade,1000);
    }
}

function so_xfade() {

    if(imgs[current]) {

        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]) {
            imgs[current].style.display = "none";
            current = nIndex;
            setTimeout(so_xfade,1000);
        } else {
            setTimeout(so_xfade,50);
        }
    } else {
        setTimeout(so_xfade,250);
    }


    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) + ")";
    }

}