filtering years in The Events Calendar year dropdown - this will only work in 2.1+

gistfile1.aw

<?php

// filter the number of years to go back
add_filter('tribe_years_to_go_back', 'my_tribe_years_to_go_back');
function my_tribe_years_to_go_back() {
	return 2;
}

// filter the number of years to go forwards
add_filter('tribe_years_to_go_forward', 'tribe_years_to_go_forward');
function tribe_years_to_go_forward() {
	return 3;
}

// filter the array itself - running this filter will overwrite the two above
add_filter('tribe_years_array', 'my_tribe_years_to_go_forward');
function my_tribe_years_to_go_forward() {
	return array('2011', '2012', '2013');
}