function check() {
   myformular = document.formular;
   address = myformular.email.value;
   if (document.formular.name.value == '') {
alert ('Enter your name.');
return false;
}
if (document.formular.surname.value == '') {
alert ('Enter your surname.');
return false;
}
if (document.formular.adresa.value == '') {
alert ('Enter your adress.');
return false;
}
if (document.formular.orash.value == '') {
alert ('Enter your city.');
return false;
}
if (document.formular.country.value == '') {
alert ('Enter your country.');
return false;
}
if (document.formular.phone.value == '') {
alert ('Enter your phone.');
return false;
}
if (address.length == '') {
alert ('Enter you email address.');
return false;
}
if ((address.length > 0) && (address.length < 6 || address.indexOf("@") < 1 || address.lastIndexOf(".") >= (address.length - 2) || address.indexOf(".") < 0)){
alert ('You entered an invalid email address.');
return false;
}
if (document.formular.room.value == '') {
alert ('Select your room.');
return false;
}
return true
}