var byfilter=false;

if ((navigator.appName=="Microsoft Internet Explorer") &&
      (!window.XMLHttpRequest)) byfilter=true;



var fade=0.0;
var imgnum=0;
var baseURL="/img/";
var imgname=new Array();
imgname[0]="01.png";
imgname[1]="02.png";
imgname[2]="03.png";
imgname[3]="04.png";
imgname[4]="05.png";
imgname[5]="06.png";
imgname[6]="07.png";
imgname[7]="08.png";
imgname[8]="09.png";
imgname[9]="10.png";

var img=new Array();
var elimg=new Array();




function fader() { 
  wait=100;
  fade+=0.05;
  if (fade>1) {
    fade=0;
    imgnum++;
    if (imgnum>=10) imgnum=0;
    wait=4000;
  }
  ifade=1.0-fade;

  ximgnum=imgnum+1;
  if (ximgnum>=10) ximgnum=0;

  if (byfilter) {
    elimg[imgnum].filters.alpha.opacity=ifade*100;
    elimg[ximgnum].filters.alpha.opacity=fade*100;
  } else {
    elimg[imgnum].style.opacity=ifade;
    elimg[ximgnum].style.opacity=fade;
  }

  t=setTimeout("fader()",wait);
}

function startfader() {
  for (n=0;n<10;n++) {
     img[n]=new Image();
     img[n]=baseURL+imgname[n];
     elimg[n]=document.getElementById("portal"+(n+1));
     if (byfilter) {
       if (n==0) elimg[n].filters.alpha.opacity=1.0;
       else elimg[n].filters.alpha.opacity=0.0;
     } else {
       if (n==0) elimg[n].style.opacity=1.0;
       else elimg[n].style.opacity=0.0;
     }
  }
  fader();
}