var tmln_active;
var nb_events = 0;
tmln_active = 0;

function timeline_previous() {
	if (tmln_active > 0) tmln_active--;
	set_active_block(tmln_active);
	$('#timeBlock' + tmln_active).qtip('show');
}

function timeline_next() {
	if (tmln_active < nb_events-1) tmln_active++;
	set_active_block(tmln_active);
	$('#timeBlock' + tmln_active).qtip('show');
}

function set_active_block(i) {
	$('div.tmln_innerTimeBlock').removeClass('tmln_active');
	$('#timeBlock' + i).addClass('tmln_active');
	if (i == 0) $('#tmln_previous').attr('src','/images/timeline_previous_inactive.png');
	else $('#tmln_previous').attr('src','/images/timeline_previous_active.png');
	if (i == nb_events-1) $('#tmln_next').attr('src','/images/timeline_next_inactive.png');
	else $('#tmln_next').attr('src','/images/timeline_next_active.png');
}

function init_timeline() {
	nb_events = $('div.tmln_innerTimeBlock').size();
	set_active_block(0);
	$('#timeBlock0').qtip('show');
}