var azExpoYears = [];

expoButClick = function(year) {
	var i, line;
	for (i = 0; i < azExpoYears.length; i++) {
		line = document.getElementById('azExpoYearLine' + azExpoYears[i]);
		if (line) line.style.display = 'none';
		line = document.getElementById('azExpoYearLink' + azExpoYears[i]);
		if (line) line.style.display = 'none';
		line = document.getElementById('azExpoYearBut' + azExpoYears[i]);
		if (line) line.style.display = '';
	}
	line = document.getElementById('azExpoYearLine' + year);
	if (line) line.style.display = '';
	line = document.getElementById('azExpoYearLink' + year);
	if (line) line.style.display = '';
	line = document.getElementById('azExpoYearBut' + year);
	if (line) line.style.display = 'none';
}