// Detect if browser is Netscape 3 + or IE 4 +.
bName = navigator.appName;
bVer = parseInt(navigator.appVersion);
  if ((bName == "Netscape" && bVer>= 3) || 
    (bName == "Microsoft Internet Explorer" && bVer>= 4)) br = "n3"; 
  else br = "n2";

// Rollover code 
  if (br== "n3") { 
  img1on = new Image();     
  img1on.src = "../images/nav01_on.gif";
	img2on = new Image();     
  img2on.src = "../images/nav02_on.gif";
	img3on = new Image();     
  img3on.src = "../images/nav03_on.gif";
	img4on = new Image();     
  img4on.src = "../images/nav04_on.gif";
	img5on = new Image();     
  img5on.src = "../images/nav05_on.gif";
	img6on = new Image();     
  img6on.src = "../images/nav06_on.gif";
	img7on = new Image();     
  img7on.src = "../images/nav07_on.gif";
	img8on = new Image();     
  img8on.src = "../images/nav08_on.gif";


  img1off = new Image();     
  img1off.src = "../images/nav01_off.gif"; 
	img2off = new Image();     
  img2off.src = "../images/nav02_off.gif";
	img3off = new Image();     
  img3off.src = "../images/nav03_off.gif";
	img4off = new Image();     
  img4off.src = "../images/nav04_off.gif";
	img5off = new Image();     
  img5off.src = "../images/nav05_off.gif";
	img6off = new Image();     
  img6off.src = "../images/nav06_off.gif";
	img7off = new Image();     
  img7off.src = "../images/nav07_off.gif";
	img8off = new Image();     
  img8off.src = "../images/nav08_off.gif";

	
  }
// Function to "activate" images.
function imgAct(imgName) {
  if (br == "n3") {
  document[imgName].src = eval(imgName + "on.src");
  }
}

// Function to "deactivate" images.
function imgInact(imgName) {
  if (br == "n3") {
  document[imgName].src = eval(imgName + "off.src");
  }
}