function swap_other() {
	if (document.getElementById('student_status_other').checked) {
		document.getElementById('other').disabled = false;
	}	else {
		document.getElementById('other').disabled = true;
		document.getElementById('other').value = "";
	}
}

function swap_years() {
	if (document.getElementById('participate').checked) {
		for (i = 0; i < 6; i++) {
			document.getElementById('checkbox' + i).disabled = false;
		}
	}	else {
		for (i = 0; i < 6; i++) {
			document.getElementById('checkbox' + i).disabled = true;
			document.getElementById('checkbox' + i).checked = false;
		}
	}
}