var nombre = 2;
var temps = new Date()
var seconde = temps.getSeconds()
var banniere = seconde % nombre;
banniere +=1;
if (banniere==1) {
url="http://www.swan.ch";
alt="Exposant 2011";
banner="http://www.sipec.net/2011/pub+banner/exposant/swan.jpg";
width="728";
height="90";
}
if (banniere==2) {
url="http://www.omega-concept-gdfsuez.com/salles-propres-industries.html";
alt="Exposant 2011";
banner="http://www.sipec.net/2011/pub+banner/exposant/omega-concept.gif";
width="728";
height="90";
}
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>');