function checkSpecialInterests()
{
	if ($('#search_special_interests input:checked').length > 0) {
		$('#clear-special-interests').show();
	} else {
		$('#clear-special-interests').hide();
	}
}

$(document).ready(function() { 
	$('#search_special_interests input').change(function() {
		checkSpecialInterests();
	});
	checkSpecialInterests();

	$('#clear-special-interests').click(function() {
		$('#search_special_interests input:checked').removeAttr('checked');
		$(this).hide();
		return false;
	});
})