adImages = new Array( "/images/NMCycling.png", "/images/phm.jpg", "/images/YogaForCyclists.png", "/images/qcycle.png", "/images/adventureadvocates.gif" )
adURLs = new Array( "http://www.nmcycling.org/", "http://paulahigginsfoundation.org/", "/flyers/2009/YogaForAthletes.pdf", "http://www.qcycle.com/", "http://www.adventureadvocates.com/" )
adIndx = 0
adCt = adImages.length

function rotate_ads() {
  document.adBanner.src=adImages[adIndx];
  adlink = document.getElementById('adURL');
  adlink.setAttribute('href', adURLs[adIndx]);
  setTimeout("rotate_ads()", 3 * 1000);
  adIndx++;
  if (adIndx == adCt) {
    adIndx = 0;
  }
}