function enviar () {
	ok_1=0
	ok_2=0
	ok_3=0
	ok_4=0
	ok_5=0
	ok_6=0
	ok_mail=1
	
	if (document.diagnostic_form.email.value==''){
		ok_mail=0
	}
	
	for(i=0; i<document.diagnostic_form.pregunta_1.length; i++) {
		if (document.diagnostic_form.pregunta_1[i].checked) {
			ok_1=1;	
		}
	}
	
	for(i=0; i<document.diagnostic_form.pregunta_2.length; i++) {
		if (document.diagnostic_form.pregunta_2[i].checked) {
			ok_2=1;	
		}
	}
	
	for(i=0; i<document.diagnostic_form.pregunta_3.length; i++) {
		if (document.diagnostic_form.pregunta_3[i].checked) {
			ok_3=1;	
		}
	}
	
	for(i=0; i<document.diagnostic_form.pregunta_4.length; i++) {
		if (document.diagnostic_form.pregunta_4[i].checked) {
			ok_4=1;	
		}
	}
	
	for(i=0; i<document.diagnostic_form.pregunta_5.length; i++) {
		if (document.diagnostic_form.pregunta_5[i].checked) {
			ok_5=1;	
		}
	}
	
	for(i=0; i<document.diagnostic_form.pregunta_6.length; i++) {
		if (document.diagnostic_form.pregunta_6[i].checked) {
			ok_6=1;	
		}
	}
	
	if (ok_1==1 && ok_2==1 && ok_3==1 && ok_4==1 && ok_5==1 && ok_6==1 && ok_mail==1) {
		document.diagnostic_form.submit();	
	} else {
		alert('Per realitzar el diagnòstic és necessari contestar a totes les preguntes\n i indicar una adreça de correu electrònic.');	
	}
}

function show_contact() {
	document.getElementById('blurer').style.display= 'block';
	document.getElementById('blurer').style.width= '100%';
	document.getElementById('blurer').style.height = '100%';
	document.getElementById('contact_div').style.display= 'block';
}


function close_contact() {
	document.getElementById('blurer').style.display= 'none';
	document.getElementById('contact_div').style.display= 'none';
	document.getElementById('friend_div').style.display = 'none';
}

function send_to_friend() {
	document.getElementById('blurer').style.display= 'block';
	document.getElementById('friend_div').style.display= 'block';
	document.getElementById('blurer').style.width= '100%';
	document.getElementById('blurer').style.height = '100%';
}