window.onload = loaded;

function loaded(){
	document.search_form.match_sex_2.onclick = check;
	document.search_form.sex_2.onclick = check;
	document.search_form.sex_1.onclick = check;
	document.search_form.match_sex_1.onclick = check
}

function check(){
	
	var sex2 = document.getElementById('sex_2');
	var matchSex2 = document.getElementById('match_sex_2');
	var maleNote = document.getElementById('male_note');

	if(matchSex2.checked == true && sex2.checked == true){
		maleNote.style.display = 'block';
	} else {
		maleNote.style.display = 'none';
	}
	
}