// 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") { 
	img6on = new Image();         
    img6on.src = "images/nav01_on.gif";
	img7on = new Image();         
    img7on.src = "images/nav02_on.gif";
	img8on = new Image();         
    img8on.src = "images/nav03_on.gif";
	img9on = new Image();         
    img9on.src = "images/nav04_on.gif";
	img10on = new Image();         
    img10on.src = "images/nav05_on.gif";
	img11on = new Image();         
    img11on.src = "images/subnav01_on.gif";
	img12on = new Image();         
    img12on.src = "images/subnav02_on.gif";
	img13on = new Image();         
    img13on.src = "images/subnav03_on.gif";
	img14on = new Image();         
    img14on.src = "images/subnav04_on.gif";
	img15on = new Image();         
    img15on.src = "images/subnav05_on.gif";
	img16on = new Image();         
    img16on.src = "images/subnav06_on.gif";
	img17on = new Image();         
    img17on.src = "images/subnav07_on.gif";
	
	
	img6off = new Image();         
    img6off.src = "images/nav01_off.gif";
	img7off = new Image();         
    img7off.src = "images/nav02_off.gif";
	img8off = new Image();         
    img8off.src = "images/nav03_off.gif";
	img9off = new Image();         
    img9off.src = "images/nav04_off.gif";
	img10off = new Image();         
    img10off.src = "images/nav05_off.gif";
	img11off = new Image();         
    img11off.src = "images/subnav01_off.gif";
	img12off = new Image();         
    img12off.src = "images/subnav02_off.gif";
	img13off = new Image();         
    img13off.src = "images/subnav03_off.gif";
	img14off = new Image();         
    img14off.src = "images/subnav04_off.gif";
	img15off = new Image();         
    img15off.src = "images/subnav05_off.gif";
	img16off = new Image();         
    img16off.src = "images/subnav06_off.gif";
	img17off = new Image();         
    img17off.src = "images/subnav07_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");
    }
}