function rnd(frN,toN) {
var rN=Math.floor(Math.random()*(toN+1-frN))+frN;
return rN;
}

function rndAd() {
var r=rnd(1,100);
if (r>=1&&r<=100) {shwAd("mkbk");}
}

function shwAd(n) {
switch (n) {
case "mkbk":
document.writeln('<style type="text/css">');
document.writeln('.adHeadline {font: bold 8pt Arial; text-decoration: underline; color: #3333FF;}');
document.writeln('.adText {font: normal 8pt Arial; text-decoration: none; color: #FFFF00;}');
document.writeln('</style>');
document.writeln('<script type="text/javascript" src="http://2.adbrite.com/mb/text_group.php?sid=10489&amp;col=4&amp;br=1&amp;dk=726567697374657220646f6d61696e5f35"></'+'script>');
document.writeln('<p />');
document.writeln('<div><a class="adHeadline" target="_top" href="http://www.adbrite.com/mb/commerce/purchase_form.php?opid=10489&amp;afsid=1">Your Ad Here</a></div>');
break;
}
}

rndAd();