browser = navigator.appName;
os = navigator.platform;
ie = "Microsoft Internet Explorer";
netscape = "Netscape";
mac = "MacPPC"

ns4 = (document.layers)? true:false
ie4 = (document.all)? true:false
function displayGroup(group,status)
	{
		//alert("Yes");
		//alert(tabs.length);
		if (browser == netscape)
		{
			//alert(document.all[tab].style.display);
			//alert("Yes");
			if (status == "On")
			{
				var tabOn = group + 'Off';
				var tabOff = group + 'On';
			}
			else
			{
				var tabOn = group + 'On';
				var tabOff = group + 'Off';
			}
			//alert(tabOn);
			//alert(tabOff);

			document.layers[tabOn].style.display = 'show';
			document.layers[tabOff].style.display = 'hide';
		}		
		else if (browser == ie)
		{
			//alert(document.all[tab].style.display);
			if (status == "On")
			{
				var tabOn = group + 'Off';
				var tabOff = group + 'On';
			}
			else
			{
				var tabOn = group + 'On';
				var tabOff = group + 'Off';
			}
			//alert(tabOn);
			//alert(tabOff);

			document.all[tabOn].style.display = 'block';
			document.all[tabOff].style.display = 'none';
		}

	}
	
function show(tab,count)
{
	if (browser == netscape)
	{
		document.layers[tab].display = 'block';
	}
	else if (browser == ie)
	{
		document.all[tab].style.display = 'block';
		var linksrc = 'LinkImage' + count;
		document.images[linksrc].src = 'images/' + image[count] + '_on.gif';		
	}
}
function hide(tab,count)
{
	if (browser == netscape)
	{
		document.layers[tab].display = '';
	}
	else if (browser == ie)
	{
		document.all[tab].style.display = 'none';
		var linksrc = 'LinkImage' + count;
		document.images[linksrc].src = 'images/' + image[count] + '_off.gif';		
	}
}	
	
function displayLink(link)
	{
		//alert("Yes");
		//alert(links.length);
		if (browser == netscape) {
		document.layers[tab].visibility = 'visible';
		}
		else if (browser == ie)
		{
			for (var i = 0; i < links.length; i++)
			{
				if (links[i] == link)
				{
					show(links[i],i);
				}
				else
				{
					hide(links[i],i);
				}
			}
		}


	}