function check_mail(email){
  re = /^[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z]{2,4}$/; 
  return email.search(re) == 0;
}
function check_tel(cislo){
  re = /^[ 0-9\.\+\/\-]{8,}$/; 
  return cislo.search(re) == 0;
}

function overeni_edit_passwd(edit_passwd) {

  passwd = edit_passwd.passwd.value;
  passwd1 = edit_passwd.passwd;
  passwd_k = edit_passwd.passwd_k.value;
  passwd_k1 = edit_passwd.passwd_k;
  
  
  if (passwd == "") {
     alert("Please fill in new password!");
     passwd1.focus();
     return false;
  }
  
  if (passwd_k == "") {
     alert("Please fill out the new password is verified!");
     passwd_k1.focus();
     return false;
  }
  
  else 
     return true;
}


function overeni_order(order) {

  first_name = order.first_name.value;
  first_name1 = order.first_name;
  last_name = order.last_name.value;
  last_name1 = order.last_name;
  email = order.email.value;
  email1 = order.email;
  street = order.street.value;
  street1 = order.street;
  city = order.city.value;
  city1 = order.city;
  post_code = order.post_code.value;
  post_code1 = order.post_code;
  
  
  if (first_name == "") {
     alert("Please fill in your First Name!");
     first_name1.focus();
     return false;
  }
  
  if (last_name == "") {
     alert("Please fill in your Last Name!");
     last_name1.focus();
     return false;
  }
  
  if (email == "") {
     alert("Please fill in your E-mail!");
     email1.focus();
     return false;
  }
  
  if (!check_mail(email)){
 	   alert ("Please check the form for your email address!");
	   email1.focus();
	   return false;
  }
  
  if (street == "") {
     alert("Please fill in your Street!");
     street1.focus();
     return false;
  }
  
  if (city == "") {
     alert("Please fill in your City!");
     city1.focus();
     return false;
  }
  
  if (post_code == "") {
     alert("Please fill in your Zip/Postal codee!");
     post_code1.focus();
     return false;
  }

  
  else 
     return true;
}

function overeni_order_payment(order) {

  card_number = order.card_number.value;
  card_number1 = order.card_number;
  cvv2 = order.cvv2.value;
  cvv21 = order.cvv2;
  
  
  if (card_number == "") {
     alert("Please fill in your Card Number!");
     card_number1.focus();
     return false;
  }
  
  if (cvv2 == "") {
     alert("Please fill in your CVV2!");
     cvv21.focus();
     return false;
  }
  
  else 
     return true;
}

function overeni_reference(reference) {

  name = reference.name.value;
  name1 = reference.name;
  email = reference.email.value;
  email1 = reference.email;
  reference = reference.reference.value;
  reference1 = reference.reference;
  
  
  if (name == "") {
     alert("Please fill in your First and Last Name!");
     name1.focus();
     return false;
  }
  
  if (email == "") {
     alert("Please fill in your E-mail!");
     email1.focus();
     return false;
  }
  
  if (!check_mail(email)){
 	   alert ("Please check the form for your email address!");
	   email1.focus();
	   return false;
  }
  
  if (reference == "") {
     alert("Please fill in Your Review!");
     reference1.focus();
     return false;
  }
  
  else 
     return true;
}