function chooseTeacher(profile){
	
	// hide all profiles
	hideBox('#profile1');
	hideBox('#profile2');
	hideBox('#profile3');
	hideBox('#profile4');
	hideBox('#profile5');
	hideBox('#profile6');
	hideBox('#profile7');
	hideBox('#profile8');
	hideBox('#profile9');
	hideBox('#profile10');
	hideBox('#profile11');
	hideBox('#profile12');
	hideBox('#profile13');
	hideBox('#profile14');
	hideBox('#profile15');
	
	// deselect all links
	$('#link1').removeClass('selected');
	$('#link2').removeClass('selected');
	$('#link3').removeClass('selected');
	$('#link4').removeClass('selected');
	$('#link5').removeClass('selected');
	$('#link6').removeClass('selected');
	$('#link7').removeClass('selected');
	$('#link8').removeClass('selected');
	$('#link9').removeClass('selected');
	$('#link10').removeClass('selected');
	$('#link11').removeClass('selected');
	$('#link12').removeClass('selected');
	$('#link13').removeClass('selected');
	$('#link14').removeClass('selected');
	$('#link15').removeClass('selected');
	
	// select chosen link
	$('#link' + profile).addClass('selected');
	
	// show chosen profile
	showBox('#profile' + profile);
}