bName = navigator.appName;
bVer = parseInt(navigator.appVersion);
if ((bName == "Netscape" && bVer >= 3) ||
    (bName == "Microsoft Internet Explorer" && bVer >= 4))
   { ver = "n3"; }
else if (bName=="Netscape" && bVer ==2)
   { ver = "n2"; }
else
   { ver = "other"; }

if (ver=="n3")
   {
   // allocate image array
   t_images = new Array(2);
  for(i = 0; i < 20; i++)
      {
      t_images[i] = new Image();
      }
   // off-state images
	t_images[0].src = "images/philosophy_a.gif"
	t_images[2].src = "images/about_a.gif"
	t_images[4].src = "images/services_a.gif"
	t_images[6].src = "images/craniofacial_a.gif"
	t_images[8].src = "images/contact_a.gif"
	t_images[10].src = "images/officeLocation_a.gif"
	t_images[12].src = "images/facilities_a.gif"
	t_images[14].src = "images/travelling_a.gif"
	t_images[16].src = "images/financing_a.gif"
	t_images[18].src = "images/intake_a.gif"
	
   // on-state images
	t_images[1].src = "images/philosophy_b.gif"
	t_images[3].src = "images/about_b.gif"
	t_images[5].src = "images/services_b.gif"
	t_images[7].src = "images/craniofacial_b.gif"
	t_images[9].src = "images/contact_b.gif"
	t_images[11].src = "images/officeLocation_b.gif"
	t_images[13].src = "images/facilities_b.gif"
	t_images[15].src = "images/travelling_b.gif"
	t_images[17].src = "images/financing_b.gif"
	t_images[19].src = "images/intake_b.gif"	
	
}

function lis(loc, img)
{
   if (ver=="n3") {
      document.images[loc].src=t_images[img].src;
      }         
}