function validate_message_form()

{
  var elsopont = document.sendmessageform.aemail.value.indexOf('.',0);
  var lastpont = document.sendmessageform.aemail.value.lastIndexOf('.');
  var kukac = document.sendmessageform.aemail.value.indexOf('@',0);
  var last_kukac = document.sendmessageform.aemail.value.lastIndexOf('@');
  var email_size = document.sendmessageform.aemail.value.length;

  if (document.sendmessageform.aemail.value=='' || kukac==(-1) || kukac==0 || elsopont==0 

|| elsopont==(-1) || (lastpont==(email_size-1)) || (kukac==(email_size-1)) || 

((kukac+1)==elsopont) || (kukac!=last_kukac))
    {
     alert('Hibás email cím formátum!')
     document.sendmessageform.aemail.focus()
     document.sendmessageform.aemail.select() 
     return false;
    }
   






if(document.sendmessageform.elements['chk2'].value=="")

{

alert('Nem adott meg jelszót!');

return false;

}

if(document.sendmessageform.elements['chk2'].value != document.sendmessageform.elements['chk23'].value)

{

alert('Nem megfelelő a jelszómegerősítés!');

return false;

}

if(document.sendmessageform.elolvasva.checked == false)

{

alert('Nem fogadta el a Szabályzatot!');

return false;

}





return true;

}
function fokusz(){
      document.getElementById('f1_upload_process').style.visibility = 'hidden';
     

 
}
function mutassjuzert(id) {
if (
document.getElementById("univkont"+id).style.display=="block" || 
document.getElementById("univkont"+id).style.display=="") 
document.getElementById("univkont"+id).style.display="none";
else if (
document.getElementById("univkont"+id).style.display=="none") 
document.getElementById("univkont"+id).style.display="block";
}

<!--
function startUpload(){
      document.getElementById('f1_upload_process').style.visibility = 'visible';
    
      return true;
}


//-->