function toggleCategoriesDisplay(viewCategoriesText, hideCategoriesText)
{
	div = document.getElementById('categoriesDiv');
	image = document.getElementById('arrowImage');
	text = document.getElementById('categoriesTextSpan');
	if (div.style.display == "none")
	{
		div.style.display = "inline";
		image.src = "images/arrowsup.gif";
		text.innerHTML = hideCategoriesText;	
	}
	else
	{
		div.style.display = "none";
		image.src = "images/arrowsdown.gif";
		text.innerHTML = viewCategoriesText;
	}
	
}

function displaySolutions()
{	
	var summariesTab = document.getElementById('summariesTab');
	var answersTab = document.getElementById('answersTab');
	
	var answersDiv = document.getElementById('answersDiv');
	var completeSolutionsDiv = document.getElementById('completeSolutionsDiv');
	
	answersDiv.style.display = "none";
	completeSolutionsDiv.style.display = "";
	
	answersTab.className = "tabOff";
	summariesTab.className = "tabOn";
}

function displayAnswers()
{	
	var summariesTab = document.getElementById('summariesTab');
	var answersTab = document.getElementById('answersTab');
	
	var answersDiv = document.getElementById('answersDiv');
	var completeSolutionsDiv = document.getElementById('completeSolutionsDiv');
	
	answersDiv.style.display = "";
	completeSolutionsDiv.style.display = "none";
	
	answersTab.className = "tabOn";
	summariesTab.className = "tabOff";
}