function infoCheck() {
var themessage = "Lutfen Bos Alanlari Doldurunuz: ";

if(document.form.firstname.value==""){
themessage = themessage + "\n * Ismi";
}
if(document.form.lastname.value==""){
themessage = themessage + "\n * Soyadi";
}
if(document.form.businessname.value==""){
themessage = themessage + "\n * Sirket Ismi";
}
if(document.form.street.value==""){
themessage = themessage + "\n * Sokak Adresi";
}
if(document.form.city.value==""){
themessage = themessage + "\n * Sehir";
}
if(document.form.country.value==""){
themessage = themessage + "\n * Ulke";
}
if(document.form.phonenumber.value==""){
themessage = themessage + "\n * Telefon No";
}
if(document.form.email.value==""){
themessage = themessage + "\n * Email";
}
if(document.form.password.value==""){
themessage = themessage + "\n * Sifre";
}
if(document.form.product.value==""){
themessage = themessage + "\n * Paket Plani";
}


//alert if fields are empty and cancel form submit
if (themessage == "Lutfen Bos Alanlari Doldurunuz: ") {
document.form.submit();
}

else {
alert(themessage);
return false;
   }
}