JS IF-sætning stopper

Hej Eksperter,

Når jeg udfører denne script så checker den kun "nickname" og ikke andet. det er som om scriptet bare stopper...

Hvorfor?




<script>
function validate(check)
{
  if(check.nickname.value=="")
  {
    alert("Please enter your desired Nickname");
    check.nickname.focus();
    return(false);
  }

if(check.firstname.value=="")
  {
    alert("Please enter your Name");
    check.firstname.focus();
    return(false);
  }

if(check.lastname.value=="")
  {
    alert("Please enter your desired Last Name");
    check.lastname.focus();
    return(false);
  }
if(check.email.value=="")
  {
    alert("Please enter your E-mail");
    check.email.focus();
    return(false);
  }
if(check.address.value=="")
  {
    alert("Please enter your Address");
    check.address.focus();
    return(false);
  }
if(check.age.value=="")
  {
    alert("Please enter your Age");
    check.age.focus();
    return(false);
  }

    if (check.password1.value == "") {
    alert("you must enter a password");
    check.password1.focus();
    return (false);
  }
  if (check.password1.value != check.password2.value) {
    alert("Entered passwords did not match");
    check.password1.focus();
    check.password1.select();
    return (false);
  }
  return (true);

}
</script>