<!--  Hide JavaScript from older browsers
browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);

if (navigator.userAgent.indexOf("Mozilla/3.0") != -1) version = "n3";
else if (browserName == "Netscape" && browserVer >= 4) version = "n3";
else if (browserName == "Microsoft Internet Explorer" && browserVer >= 3)
                version = "n3";
else version = "n2";

if (version == "n3") {
	switch4on = new Image();
	switch4on.src = "../images/shared/about_on.gif";
	switch5on = new Image();
	switch5on.src = "../images/shared/contact_roll.gif";
	
	switch4off = new Image();
	switch4off.src = "../images/shared/about_on.gif";
	switch5off = new Image();
	switch5off.src = "../images/shared/contact_off.gif";
}

function img_act(imgName) {
	if (version == "n3") {
		imgOn = eval(imgName + "on.src");
		var iCount = 0;
		
		img_inact_all();

		// This is Netscape-only behavior for images on a separate layer
		if (typeof(document[imgName]) == "undefined") {
			// roll the image wherever it may be
			for (iCount = 0; iCount < document.layers.length; iCount++) {
				if (typeof(document.layers[iCount].document[imgName]) != "undefined") {
					document.layers[iCount].document[imgName].src = imgOn;
				}
			}

		} else {
			document[imgName].src = imgOn;
		}
	}
}

function img_inact(imgName) {
	if (version == "n3") {
		imgOff = eval(imgName + "off.src");
		var iCount = 0;
		
		// This is Netscape-only behavior for images on a separate layer
		if (typeof(document[imgName]) == "undefined") {
			// roll the image wherever it may be
			for (iCount = 0; iCount < document.layers.length; iCount++) {
				if (typeof(document.layers[iCount].document[imgName]) != "undefined") {
					document.layers[iCount].document[imgName].src = imgOff;
				}
			}

		} else {
			document[imgName].src = imgOff;
		}
	}
}

// Use instead of img_inact inside onMouseOut when onMouseOver causes a fly-out menu,
// in which case, onMouseOut should not un-highlight the image (because even though
// the mouse is out of the image, it's probably in the menu, so it makes sense to keep
// it highlighted).  Therefore, we use this to unhighlight everything when the next
// image is highlighted.
function img_inact_all() {
	document["switch4"].src = switch4off.src
	document["switch5"].src = switch5off.src
}