if (document.images) {

	homeon = new Image();
	homeon.src = "images/sidenav_home_on.gif";

	homeoff = new Image();
	homeoff.src = "images/sidenav_home_off.gif";

	sampleson = new Image();
	sampleson.src = "images/sidenav_samples_on.gif";

	samplesoff = new Image();
	samplesoff.src = "images/sidenav_samples_off.gif";

	contacton = new Image();
	contacton.src = "images/sidenav_contact_on.gif";

	contactoff = new Image();
	contactoff.src = "images/sidenav_contact_off.gif";

	bighouseon = new Image();
	bighouseon.src = "images/sidenav_bighouse_on.gif";

	bighouseoff = new Image();
	bighouseoff.src = "images/sidenav_bighouse_off.gif";

	sndadviceon = new Image();
	sndadviceon.src = "images/sidenav_sndadvice_on.gif";

	sndadviceoff = new Image();
	sndadviceoff.src = "images/sidenav_sndadvice_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");
	}
  }
}