function goforit()
	{
if(is.ns4)
	{
    doc = "document";
    sty = "";
    htm = ".document";
	}
else if(is.ie4)
	{
    doc = "document.all";
    sty = ".style";
    htm = "";
	}

	introObj = eval(doc + '["introLyr"]' + sty);
	introObj.left = mainx;
	introObj.top = mainy;
	introObj.visibility = "visible";

	officeObj = eval(doc + '["officeLyr"]' + sty);
	officeObj.left = mainx;
	officeObj.top = mainy;

	objectObj = eval(doc + '["objectLyr"]' + sty);
	objectObj.left = mainx;
	objectObj.top = mainy;

	textsObj = eval(doc + '["textsLyr"]' + sty);
	textsObj.left = mainx;
	textsObj.top = mainy;

	atextObj = eval(doc + '["atextLyr"]' + sty);
	atextObj.left = mainx;
	atextObj.top = mainy;

	examObj = eval(doc + '["examLyr"]' + sty);
	examObj.left = mainx;
	examObj.top = mainy;

	librObj = eval(doc + '["librLyr"]' + sty);
	librObj.left = mainx;
	librObj.top = mainy;

	writObj = eval(doc + '["writLyr"]' + sty);
	writObj.left = mainx;
	writObj.top = mainy;

	factsObj = eval(doc + '["factsLyr"]' + sty);
	factsObj.left = mainx;
	factsObj.top = mainy;

	biblObj = eval(doc + '["biblLyr"]' + sty);
	biblObj.left = mainx;
	biblObj.top = mainy;

	assignObj = eval(doc + '["assignLyr"]' + sty);
	assignObj.left = mainx;
	assignObj.top = mainy;

	quizObj = eval(doc + '["quizLyr"]' + sty);
	quizObj.left = mainx;
	quizObj.top = mainy;

	assessObj = eval(doc + '["assessLyr"]' + sty);
	assessObj.left = mainx;
	assessObj.top = mainy;

	libassObj = eval(doc + '["libassLyr"]' + sty);
	libassObj.left = mainx;
	libassObj.top = mainy;

	lmenuObj = eval(doc + '["lmenuLyr"]' + sty);
	lmenuObj.visibility = "visible";

	}

var menu_selection = "intro";

function menuToggle(selection)
	{
	var old_page = eval(menu_selection + "Obj");
	old_page.visibility = "hidden";

	var new_page = eval(selection + "Obj");
	new_page.visibility = "visible";

	menu_selection = selection;

	}