today=new Date();
jran=today.getTime();
var number = 1;
var random_number="";
var bannerimage="";
var banneralt="";
var bannerurl="";
var bannertarget="";

ia=9301;
ic=49297;
im=233280;
jran = (jran*ia+ic) % im;
random_number = Math.ceil( (jran/(im*1.0)) *number);
// Loads the appropriate image based on random number.
if (random_number==1) {
isImage = false;
bannerimage = "images/buttons/autotracker.gif";
banneralt = "Autotracker";
bannerurl = "Tyresindex.aspx";
bannertarget = "_self";
}