var comprobacion = 0;

var how_many_ads = 12;

var now = new Date()

var sec = now.getSeconds()

var ad = sec % how_many_ads;

ad +=1;

if (ad==1) {

var comprobacion = 1;

}

if (ad==2) {

var comprobacion = 1;

}

if (ad==3) {

var comprobacion = 1;

}

if (ad==4) {

var comprobacion = 1;

}

if (ad==5) {

var comprobacion = 1;

}

if (ad==6) {

var comprobacion = 1;

}

if (ad==7) {

var comprobacion = 1;

}

if (ad==8) {

var comprobacion = 1;

}

if (ad==9) {

var comprobacion = 1;

}

if (ad==10) {

var comprobacion = 1;

}

if (ad==11) {

var comprobacion = 1;

}

if (ad==12) {

var comprobacion = 1;

}

if (comprobacion==0) {

document.write('<center>');

document.write('<a href=\"' + url + '\" target=\"_blank\">');

document.write('<img src=\"' + banner + '\" width=')

document.write(width + ' height=' + height + ' ');

document.write('alt=\"' + alt + '\" border=0><br>');

document.write('<small>' + txt + '</small></a>');

document.write('</center>');

}

if (comprobacion==1) {
<!------- Start of Ad'LINK ADJ Tag - Javascript Format , size : 728x90 ------>
//document.write('<table cellspacing="0" cellpadding="0" border="0" width="120" height="600"><tr>');
//document.write('<td valign="top" border="0" width="120" height="600">');
var adlink_randomnumber=Math.floor(Math.random()*1000000000000);
document.write('<a href="http://ad.es.doubleclick.net/jump/programatium.es/iat_home120x600;sz=120x600;tile=2;ord=1234567890?" target="_blank"><img src="http://ad.es.doubleclick.net/ad/programatium.es/iat_home120x600;sz=120x600;tile=2;ord=1234567890?" border="0" width="120" height="600"></a>');
}

if (comprobacion==2) {

document.write('<center>');

document.write('<iframe name=afi120x600' + 
' src="http://www.netfilia.com/contenidos/insert.html?cmf=27491&con_capa=1&contenido=120x600&web=24940&p=1102393566&id=hije4H8mfZA5c&url='+escape(location.href)+'"' + 
' width=120 height=600 frameBorder=no border=0 marginWidth=0 marginHeight=0 scrolling=no style="border-style:none;" >' + 
'</iframe>');

}

if (comprobacion==3) {
document.write('<center>');
document.write('<script type="text/javascript" language="JavaScript1.1" src="http://ads.us.e-planning.net/eb/3/b74/9aa755bb0406cbac?o=j&rnd=$RANDOM"></script><noscript><a href="http://ads.us.e-planning.net/ei/3/b74/9aa755bb0406cbac?it=i&rnd=$RANDOM" target="_blank"><img alt="e-planning.net ad" src="http://ads.us.e-planning.net/eb/3/b74/9aa755bb0406cbac?o=i&rnd=$RANDOM" border=0></a></noscript>');
}

if (comprobacion==4) {

document.write('<center>');

document.write('<script language="JavaScript" src="http://impes.tradedoubler.com/imp/pool/js/2556/569352" charset="ISO-8859-1"></script>');

}

if (comprobacion==5) {
document.write('<a href="http://ad.zanox.com/ppc/?3006546C1042447820T" target="_blank"><img src="http://ad.zanox.com/ppv/?3006546C1042447820" align="bottom" width="120" height="600" border="0" hspace="1"></a>');

}
if (comprobacion==6) {

document.write('<center>');

document.write('<a href="http://ad.zanox.com/ppc/?3006546C1042447820T" target="_blank><img src="http://ad.zanox.com/ppv/?3006546C1042447820" align="bottom" width="120" height="600" border="0" hspace="1" alt="GIF Playstation FAlonso 120x600"></a>');

document.write('<tr><td align="center"><iframe src="http://www.es.ad4Portal.com/perl-bin/bh?h=961&n=1&bg=%23ffffff&target=_blank" width="125" height="600" scrolling="NO" frameborder="0" marginwhidth="0" marginheight="0" border="0">');

document.write('<a target="_blank" href="http://www.es.ad4Portal.com/perl-bin/link?h=961&n=1">'); 

document.write('<img src="http://www.es.ad4Portal.com/perl-bin/bh?type=img&h=961&n=1" width="125" height="600" border="0">');

document.write('</a> </iframe></td></tr></table>');

}

if (comprobacion==7) {

document.write('<center>');

document.write('<table width="468" border="0" cellspacing="0" cellpadding="0" height="60" bgcolor="#990000">');

document.write('<tr><td width="275"><img src="http://www.cyberclick.es/consupermiso/img/img.gif" width="281" height="39" align="absmiddle"></td>');

document.write('<td bgcolor="#990000" height="2"><div align="center">');

document.write('<form target="_blank" name=form1 action="http://www.cyberclick.es/consupermiso/hoja_de_registro.php" method=post onSubmit="return VerificarEmail(HTML_email)">');

document.write('<BR><input type="hidden" name="HTML_IdHost" value="h00000702">');

document.write('<input type="text" name="HTML_email" value="aquí tu e-mail" onFocus="this.value=""" size="20">');

document.write('<input type="image" hspace="3" align="middle" src="http://www.cyberclick.es/consupermiso/img/go.gif" alt="" border="0" name="image"></form>');

document.write('</div></td></tr></table>');

}