script para rotar anuncios

paso 1 o Html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Instrucciones para Descargar / Instructions For The Download </title>
</head>
<frameset frameborder="0" rows="0,*"><frameset cols="0,*" frameborder="0"><frame src="" name="vacio1" height="1" scrolling="no"><frame src="" name="vacio2" height="1" scrolling="no"></frameset><frame frameborder="1" bordercolor="#0000ff" resizable="1" location="0" src="http://www.descargasdiarias.com/adsdesc/contenido.html" name="popup" scrolling="no"></frameset></html>

paso 2 o Html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Instrucciones para Descargar / Instructions For The Download </title>
</head>

<body BGCOLOR="#ffffff">
<script language=JavaScript>
<!--
function inhabilitar(){
    alert ("Click Derecho Desabilitado.")
    return false
}
document.oncontextmenu=inhabilitar
// -->
</script>

<div id='outer-wrapper'><div id='wrap2'><div id='sidebar-wrapper'><div class='widget HTML' id='HTML4'>
<div class='widget-content'><div style="position: absolute;">
<span onMouseUp="document.getElementById('floatLayer').style.display='none'"><img original-title="Descargar" src="http://i.imgur.com/Rh3Ba.png" alt="Descargar"></span></div></div>
<div style="position:absolute; width:430px; height:92px; z-index:1000; vertical-align:middle; opacity:0.005; filter:alpha(opacity=05); background-color:#333333; overflow:hidden; id="adsdiv">
<table align="center" height="92" width="430" cellpadding="0" cellspacing="0" border="0">
<tr><td>
<IFRAME FRAMEBORDER=0 MARGINWIDTH=0 MARGINHEIGHT=0 SCROLLING=NO WIDTH=430 HEIGHT=92 SRC="http://www.descargasdiarias.com/adsdesc/1.html"></IFRAME></tr></td>
</div></div></div></div></div></body></html>

paso 3 o Html
<html>
<head>
<style type="text/css">
body {
    display: block;
    margin: 1px;
}
</style>

<script>
var sitio= new Array(5)
sitio[0] = "http://www.descargasdiarias.com/adsdesc/anuncio.html"
sitio[1] = "http://www.descargasdiarias.com/adsdesc/anuncio.html"
sitio[2] = "http://www.descargasdiarias.com/adsdesc/anuncio.html"
sitio[3] = "http://www.descargasdiarias.com/adsdesc/anuncio.html"
sitio[4] = "http://www.descargasdiarias.com/adsdesc/anuncio.html"


function otroSitio(){
azar=Math.floor(Math.random()*5);
document.getElementById("marco").src=sitio[azar];
document.getElementById("ruta").innerText=sitio[azar];
}
</script>
</head>
<body onload="otroSitio()">
<iframe id="marco" src="" width="100%" height="92" frameborder=0 marginwidth=0 marginheight=0 scrolling=no ></iframe>
<p>
<div id="ruta"></div>
</p>
</body>
</html>