// JavaScript Document
function cekComment(f) {
	var i = f.field_user;
	if(!i.value.length) {
		alert('Masukkan nama Anda!');
		i.focus();
		return false;
	}
	var i = f.field_city;
	if(!i.value.length) {
		alert('Masukkan kota domisili Anda!');
		i.focus();
		return false;
	}
	var i = f.field_mail;
	if (!isValidEmail(i.value)){
		alert('Masukkan Email yang valid!');
		i.focus();
		return false;		
	}
	var i = f.field_messege;
	if(!i.value.length) {
		alert('Masukkan pesan Anda!');
		i.focus();
		return false;
	}
	var i = f.stext;
	if(!i.value.length) {
		alert('Masukkan kode gambar di bawah!');
		i.focus();
		return false;
	}
	return true;
}

function isValidEmail(email) {
	if (email=="") {
		return false;
	}
	if (email.indexOf('@')<1) {
		return false;
	}
	if (email.indexOf('.')==-1) {
		return false;
	}
	if (email.indexOf('.')==(email.length -1)) {
		return false;
	}
	if (email.indexOf('.')==(email.indexOf('@')+1)) {
		return false;
	}
	return true;
}

function mailtoCheck() {

	if ((document.mailto.to.value == "")) {
		alert(mail_to_error[1]);
		return false;
	}
	
	if (!isValidEmail(document.mailto.to.value)) {
		alert(mail_to_error[0]);
		return false;
	}
		
	if ((document.mailto.from.value == "")) {
		alert(mail_to_error[3]);
		return false;
	}
	
	if (!isValidEmail(document.mailto.from.value)) {
		alert(mail_to_error[2]);
		return false;
	}
	
	return true;
}

function getRoom(f) {
	if (f.value == "Sentra Karaoke - Enterprise")
		document.getElementById('room').style.visibility='visible';
	else
		document.getElementById('room').style.visibility='hidden';
}