<!-- This script and many more are available free online at --> <!-- The JavaScript Source!! <http://javascript.internet.com> --> 
<!-- Begin 
var how_many_ads =1; 
var now = new Date() 
var sec = now.getSeconds() 
var ad = sec % how_many_ads; 
ad +=1; 
if (ad==1) { 
txt=""; 
url="http://www.apteb.org"; 
alt="Logotipo de la asociación APTEB"
banner="images/logo_peq.jpg"; 
width="126"; 
height="42";
border="0"; 
} 

document.write('<center>'); 
document.write('<a href=\"' + url + '\" target=\"_top\">'); 
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>'); 
// End -->
