var ns6 = document.getElementById && !document.all;
 var ie4 = document.all;

 if(ns6) affDiv = document.getElementById("Divaff");
 else if(ie4) affDiv = document.all["Divaff"];


function changeAff()
{
 numAff=Math.floor(Math.random()*nbaff)+1;
 affDiv.innerHTML = aff[numAff];
}


changeAff();
if(dynamique!=0) setInterval("changeAff()",dynamique * 1000);