var nombre = 1;
var temps = new Date()
var seconde = temps.getSeconds()
var banniere = seconde % nombre;
banniere +=1;
if (banniere==1) {
url="http://www.hydrotec.fr";
alt="Exposant 2010";
banner="http://www.saficentre.com/2010/pub+banner/exposant/hydrotec.jpg";
width="468";
height="60";
}
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></a>');
document.write('</center>');