//-------- set up global variables for browser-specific handling -------
//----- set up variables ------------------
var lastAnswer, lastQuestion, lastNSAnswer;

//------- functions --------------------
function showAnswer(answer, evt, question)
{
	//hide previous answer 
	if(lastAnswer) { hideLastAnswer(); }    

	//show current answer and highlight question that goes with it
	popupLayer(answer, evt);

    if(document.all && question)  //IE only
	{ 
		lastQuestion = getItem(question);
		lastQuestion.background = "fuchsia"; 
	}

	//remember this answer
	lastAnswer = answer;
}

function hideLastAnswer()
{
   hideLayer(lastAnswer);
   if(document.all)	{lastQuestion.background = "transparent"; } //IE only
}