var dimages=new Array();
var numImages=11;


dimages[0]=new Image();
dimages[0].src="/sn_website/images/banners/SN_stethoscoop.jpg";
dimages[1]=new Image();
dimages[1].src="/sn_website/images/banners/SN_glasses_1.jpg";
dimages[2]=new Image();
dimages[2].src="/sn_website/images/banners/SN_glasses_2.jpg";
dimages[3]=new Image();
dimages[3].src="/sn_website/images/banners/SN_dice_2.jpg";
dimages[4]=new Image();
dimages[4].src="/sn_website/images/banners/SN_dice_1.jpg";
dimages[5]=new Image();
dimages[5].src="/sn_website/images/banners/SN_binocular.jpg";
dimages[6]=new Image();
dimages[6].src="/sn_website/images/banners/SN_loop_2.jpg";
dimages[7]=new Image();
dimages[7].src="/sn_website/images/banners/SN_terlescoop.jpg";
dimages[8]=new Image();
dimages[8].src="/sn_website/images/banners/SN_loop_1.jpg";
dimages[9]=new Image();
dimages[9].src="/sn_website/images/banners/SN_football.jpg";
dimages[10]=new Image();
dimages[10].src="/sn_website/images/banners/SN_fortune_cookies.jpg";

var curImage=-1;

function swapPicture(elementId)
{
  if (document.images)
  {
  
    var nextImage=curImage+1;
    if (nextImage>=numImages)
    {
      nextImage=0;
    }
    if (dimages[nextImage] && dimages[nextImage].complete)
    {
    
      var target=0;
      if (document.images.snbanner)
        target=document.images.snbanner;
      if (document.all && document.getElementById(elementId))
        target=document.getElementById(elementId);
      // make sure target is valid.  It might not be valid
      //   if the page has not finished loading
      if (target)
      {
        target.src=dimages[nextImage].src;
        curImage=nextImage;
      }

      setTimeout("swapPicture('" + elementId + "')", 10000);

    }
    else
    {
      setTimeout("swapPicture('" + elementId + "')", 500);
    }
  }
}