firstTime = true;

function openWin(imagename, height, width)
{
	height += 25;
	width += 25;
	var IMAGE_DIRECTORY = 'siteimages/';

	if (!firstTime)
	{ newWin.close(); }
	
	newWin = window.open(IMAGE_DIRECTORY + imagename,'','width=' + width + ',height=' + height + ',status=no,menubar=no,scrollable=auto,resizable=yes');
	
	if (newWin != null)
	{ newWin.focus(); }
	
	firstTime = false;
}