function MD_random(r1, r2) {
  if (r2 > r1) return (Math.round(Math.random()*(r2-r1))+r1);
  else return (Math.round(Math.random()*(r1-r2))+r2);
}

function MakeArray(n){
        this.length = n;
        for (var i= 1; i<=n; i++){
         		this[i] = 0}
        return this
}



var numBanner = 4;

var bannerImage = new MakeArray(numBanner);

var bannerImage2 = new MakeArray(numBanner);
var rnd_banner = MD_random(0, numBanner-1);
var rnd_number = MD_random(1,1000);


bannerImage[0] = "http://www.oska.com/images/dm05_006_150x200.gif"

bannerImage[1] = "http://www.oska.com/images/dm05_004_150x200.gif"

bannerImage[2] = "http://www.oska.com/images/dm05_007_150x200.gif"

bannerImage[3] = "http://www.oska.com/images/dm05_008_130x200.gif"



document.writeln('<img src="' + bannerImage[rnd_banner]+'" border=0 alt="click me for free stripper">');