var currentImgId;
var currentCpyId;

function show(imgId,cpyId)
{
	hideDisplay(currentImgId);
	hideDisplay(currentCpyId);
  showDisplay(imgId);
	showDisplay(cpyId);
	currentImgId = imgId;
	currentCpyId = cpyId;
}

function showDisplay(divId)
{
	var styleToChange = getStyle(divId);
	if (styleToChange) styleToChange.display = 'block';
}

function hideDisplay(divId)
{
	var styleToChange = getStyle(divId);
	if (styleToChange) styleToChange.display = '';
}

function getStyle(divId)
{
	if (!divId)
	{
		return null;
	}
	try
	{	
		var styleToChange;
		if (document.getElementById)
		{
			// standard way
			styleToChange = document.getElementById(divId).style;
		}
		else if (document.all)
		{
			// old msie versions
			styleToChange = document.all[divId].style;
		}
		else if (document.layers)
		{
			// nn4 works
			styleToChange = document.layers[divId].style;
		}
	}
	catch(err)
	{
		//alert(divId + ' ' + err);
		return null;
	}
	return styleToChange;
}

function generateCryingOfLot49(p1, p2, p3)
{
  var p4 = "@";
  var p5 = "<a hr" + "ef=" + "ma" + "il" + "to:" + p1 + p4 + p2 + "." + p3 + ">" + p1 + p4 + p2 + "." + p3 + "</a>";
  document.write(p5);
}