var how_many_ads = 24;
var now = new Date()
var sec = now.getSeconds()
var ad = sec % how_many_ads;
ad +=1;
if (ad==1) { banner="http://homepage.mac.com/ravih/Images/windbott1.gif"; }
if (ad==2) { banner="http://homepage.mac.com/ravih/Images/windbott2.gif"; }
if (ad==3) { banner="http://homepage.mac.com/ravih/Images/windbott3.gif"; }
if (ad==4) { banner="http://homepage.mac.com/ravih/Images/windbott4.gif"; }
if (ad==5) { banner="http://homepage.mac.com/ravih/Images/windbott5.gif"; }
if (ad==6) { banner="http://homepage.mac.com/ravih/Images/windbott6.gif"; }
if (ad==7) { banner="http://homepage.mac.com/ravih/Images/windbott7.gif"; }
if (ad==8) { banner="http://homepage.mac.com/ravih/Images/windbott8.gif"; }
if (ad==9) { banner="http://homepage.mac.com/ravih/Images/windbott9.gif"; }
if (ad==10) { banner="http://homepage.mac.com/ravih/Images/windbott10.gif"; }
if (ad==11) { banner="http://homepage.mac.com/ravih/Images/windbott11.gif"; }
if (ad==12) { banner="http://homepage.mac.com/ravih/Images/windbott12.gif"; }
if (ad==13) { banner="http://homepage.mac.com/ravih/Images/windbott13.gif"; }
if (ad==14) { banner="http://homepage.mac.com/ravih/Images/windbott14.gif"; }
if (ad==15) { banner="http://homepage.mac.com/ravih/Images/windbott15.gif"; }
if (ad==16) { banner="http://homepage.mac.com/ravih/Images/windbott16.gif"; }
if (ad==17) { banner="http://homepage.mac.com/ravih/Images/windbott17.gif"; }
if (ad==18) { banner="http://homepage.mac.com/ravih/Images/windbott18.gif"; }
if (ad==19) { banner="http://homepage.mac.com/ravih/Images/windbott19.gif"; }
if (ad==20) { banner="http://homepage.mac.com/ravih/Images/windbott20.gif"; }
if (ad==21) { banner="http://homepage.mac.com/ravih/Images/windbott21.gif"; }
if (ad==22) { banner="http://homepage.mac.com/ravih/Images/windbott22.gif"; }
if (ad==23) { banner="http://homepage.mac.com/ravih/Images/windbott23.gif"; }
if (ad==24) { banner="http://homepage.mac.com/ravih/Images/windbott24.gif"; }
document.write('<img src=\"' + banner + '\"')