function adArray() {
 for (i=0; i*2<adArray.arguments.length; i++) {
  this[i] = new Object();
  this[i].src = adArray.arguments[i*2];
  this[i].href = adArray.arguments[i*2+1];
 }
 this.length = i;
}
var ads = new adArray(
"/member/3/flash/gfx/2012_Volunteer.jpg",
"/index.php?page=default/national_detail&type=nationals&raceid=106349&search=",
"/member/3/flash/gfx/2012_Supers.jpg",
"/index.php?page=default/national_detail&type=nationals&raceid=106350&search=",
"/member/3/flash/gfx/12_ChulaHype.jpg",
"/index.php?page=default/national_detail&type=nationals&raceid=106351&search=",
"/member/3/flash/gfx/2012_SoCal.jpg",
"/index.php?page=default/national_detail&type=nationals&raceid=106351&search=",
"/member/3/flash/gfx/2012_GreatNW.jpg",
"/index.php?page=default/national_detail&type=nationals&raceid=106353&search=");
var ad_num = 0;  
document.write('<A HREF="'+ads[ad_num].href+'"><IMG SRC="'+ads[ad_num].src+'" '
+'WIDTH="250" HEIGHT="200" name=js_ad border="0"></A>');
link_num = document.links.length-1;
function rotateSponsor() {
 if (document.images) {
    if (ad_num<4)
  {
	ad_num = ad_num + 1;
	}
  else
  {
	  ad_num = 0;
  }
  document.js_ad.src = ads[ad_num].src;
  document.links[link_num].href = ads[ad_num].href;
  setTimeout("rotateSponsor()",3000);
 }
}
setTimeout("rotateSponsor()",3000);