prev_div = 'about-2010';
function swap_container_div( active_div ){
	if( prev_div != active_div ){
		$('#'+prev_div).hide();
		$('#'+prev_div+'-link').removeClass('active');
		$('#'+active_div).show();
		$('#'+active_div+'-link').addClass('active');
		prev_div = active_div;
	}
	return false;
}