<!--
function menuOn(menuName)
	{
	about1.style.backgroundColor="#990000";
	education1.style.backgroundColor="#990000";
	science1.style.backgroundColor="#990000";
	inet1.style.backgroundColor="#990000";
	var menu = new Array(4);
		menu[0] = "about";
		menu[1] = "education";
		menu[2] = "science";
		menu[3] = "inet";

	var curMenu;

	for (var i = 0; i < menu.length; i++) 
		{
		curMenu = menu[i]; 
		if (menuName == menu[i])
			{
			if (document.all)
				{
				document.all(curMenu).style.visibility = "visible";
				}
			else if (document.layers)
				{
				document.layers[curMenu].visibility = "show";
				}
			else if (document.getElementById)
				{
				document.getElementById(curMenu).style.visibility = "visible"
				}
			}
		else if (menuName != menu[i])
			{
			if (document.all)
				{
				document.all(curMenu).style.visibility = "hidden";
				}
			else if (document.layers)
				{
				document.layers[curMenu].visibility = "hide";
				}
			else if (document.getElementById)
				{
				document.getElementById(curMenu).style.visibility = "hidden";
				}
			}
		}
	}
	
function menuOff()
	{
	about1.style.backgroundColor="#990000";
	education1.style.backgroundColor="#990000";
	science1.style.backgroundColor="#990000";
	inet1.style.backgroundColor="#990000";
	var menu = new Array(4);
		menu[0] = "about";
		menu[1] = "education";
		menu[2] = "science";
		menu[3] = "inet";
	var curMenu;
	for (var i = 0; i < menu.length; i++) 
		{
		curMenu = menu[i]; 
		if (document.all){document.all(curMenu).style.visibility = "hidden";}
		else if (document.layers){document.layers[curMenu].visibility = "hide";}
		else if (document.getElementById){document.getElementById(curMenu).style.visibility = "hidden";}
		}
	}

function menuSwitch(param)
	{
	about1.style.backgroundColor="#990000";
	education1.style.backgroundColor="#990000";
	science1.style.backgroundColor="#990000";
	inet1.style.backgroundColor="#990000";

	if (document.all)
		{
		var mode = document.all(param).style.visibility;
		if (mode !== 'visible'){document.all(param).style.visibility="visible";}
		else {document.all(param).style.visibility="hidden";}
		}
	else if (document.layers)
		{
		var mode = document.layers[param].visibility;
		if (mode !== 'show'){document.layers[param].visibility = "show";}
		else {document.layers[param].visibility = "hide";}
		}
	else if (document.getElementById)
		{
		var mode = document.getElementById(param).style.visibility;
		if (mode !== 'hidden'){document.getElementById(param).style.visibility = "visible";}
		else {document.getElementById(param).style.visibility = "hidden";}
		}
	}

//-->