var BG_COUNT=16;
function Randomize(seed) {
  this.srand=function(seed) {
    tmpdt=new Date();
    this.seed=this.srand.arguments.length ? seed : tmpdt.getSeconds()*1000+tmpdt.getMilliseconds();
  }

  this.random=function() {
    this.seed=(this.seed*2061+7)%65536;
    return this.seed/65536;
  }
  this.randomi=function(range) {
    return Math.floor(this.random()*range*10)%range;
  }

  Randomize.arguments.length ? this.srand(seed) : this.srand();
}
function setBackground(){
	rnd=new Randomize();
	r=Math.floor(rnd.random()*BG_COUNT);
	document.getElementById("top").style.backgroundImage = 'url("/img/bg_'+('0'+r).slice(-2)+'.jpg")';
	document.getElementById("top").style.backgroundPosition = 'bottom';
}
function setBanner(){
	if((new Date()).getHours()==3){
		document.streamBanner.src="/stream_banner2.jpg";
	}
}