if (document.images) {
  image1on = new Image();
  image1on.src = "../images/nav_home_on.gif";
  image2on = new Image();
  image2on.src = "../images/nav_policies_on.gif";
  image3on = new Image();
  image3on.src = "../images/nav_about_on.gif";
  image4on = new Image();
  image4on.src = "../images/nav_deliveries_on.gif";
  image5on = new Image();
  image5on.src = "../images/nav_tips_on.gif";

  image1off = new Image();
  image1off.src = "../images/nav_home_off.gif";
  image2off = new Image();
  image2off.src = "../images/nav_policies_off.gif";
  image3off = new Image();
  image3off.src = "../images/nav_about_off.gif";
  image4off = new Image();
  image4off.src = "../images/nav_deliveries_off.gif";
  image5off = new Image();
  image5off.src = "../images/nav_tips_off.gif";
}
function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}

var refr=escape(document.referrer); /* get the http referer and encode it */
var dom=location.hostname; /* get the host domain */
var stURL="http://au.decdna.net/n/2418/2418/www.fastflowers.com.au/2d4b4a9b002502000000000600000000017dc4fc0000000000000032000000000000000000/i/c?1066020953.559116&1pixgif&referer="+ refr;
if (refr && refr.search(dom) == -1) /* if the referrer is external preload the image request */
{
imageTR = new Image();
imageTR.src = stURL;
}