// JavaScript Document
// CrossFader

var x;
if (x) {
 if (typeof(cf) == "undefined")
 var cf;
}
else {
 var cf = this;
}
cf.fader = function (obj, fadetime, delay) {
 this.el2 = -1;
 this.id = obj;
 for (i=0; i<obj.length; i++) {
  var s = document.getElementById(obj[i]).style;
  s.position = "absolute"; s.visibility = "hidden"; s.opacity = 0; s.filter = "alpha(opacity=0)";
 }
 this.dur = fadetime;
 this.delay = delay;
 this.fade2();
}
cf.fader.prototype.fade1 = function() {
 this.time += this.interval;
 var ieop = Math.round(this.fade(this.time, 0, 1, this.dur) * 100);
 var op = ieop / 100;
 var s = document.getElementById(this.id[this.el2]).style;
 s.opacity = op; s.filter = "alpha(opacity="+ieop+")";
 if (this.el1 > -1) {
  var s = document.getElementById(this.id[this.el1]).style;
  s.opacity = 1 - op; s.filter = "alpha(opacity="+(100 - ieop)+")";
 }
 if (this.time == this.dur) {
  clearInterval(this.id1);
  if (this.el1 > -1)
   document.getElementById(this.id[this.el1]).style.visibility = "hidden";
   var t=this;
   this.id2 = setInterval(function() {t.fade2()}, this.delay);
 }
}
cf.fader.prototype.fade2 = function() {
 if (this.id2)
  clearInterval(this.id2);
 this.el1 = this.el2;
 this.el2++;
 if (!this.id[this.el2]) this.el2 = 0;
 if (this.el2 == this.el1)
  return false;
 document.getElementById(this.id[this.el2]).style.visibility = "visible";
 this.interval = 50;
 this.time = 0;
 var t=this;
 this.id1 = setInterval(function() {t.fade1()}, this.interval);
}
cf.fader.prototype.fade = function(t,b,c,d) {
 return c/2 * (1 - Math.cos(Math.PI*t/d)) + b;
}