function formCheck(){
	fali = "";
	
	if (document.obrazac.ime.value == "") fali = fali + "\n- Ime";
	if (document.obrazac.adresa.value == "") fali = fali + "\n- Adresu";
	if (document.obrazac.mjesto.value == "") fali = fali + "\n- Mjesto";
	if (document.obrazac.poruka.value == "") fali = fali + "\n- Poruku";
	if (fali != "")
	   alert("Niste upisali sve potrebne podatke!" + "\n\n" + "Molimo upišite:" + fali)
	else
	 document.obrazac.submit();
}

function formCheckS(){
	fali = "";
	
	if (document.obrazac.autor.value == "") fali = fali + "\n- Autor(i)";
	if (document.obrazac.naslov.value == "") fali = fali + "\n- Naslov referata";
	if (document.obrazac.adresa.value == "") fali = fali + "\n- Adresa autora";
	if (document.obrazac.tele.value == "") fali = fali + "\n- Telefon";
	if (document.obrazac.email.value == "") fali = fali + "\n- Email";
	if (document.obrazac.poruka.value == "") fali = fali + "\n- Poruku";
	if (fali != ""){
	   alert("Niste upisali sve potrebne podatke!" + "\n\n" + "Molimo upišite:" + fali);
       }
	else {
	 document.obrazac.submit();
       }
} 

function formCheckSe(){
	fali = "";
	
	if (document.obrazac.autor.value == "") fali = fali + "\n- Author(s)";
	if (document.obrazac.naslov.value == "") fali = fali + "\n- Title of the Paper";
	if (document.obrazac.adresa.value == "") fali = fali + "\n- Address of participant";
	if (document.obrazac.tele.value == "") fali = fali + "\n- Phone";
	if (document.obrazac.email.value == "") fali = fali + "\n- Email";
	if (document.obrazac.poruka.value == "") fali = fali + "\n- Brief description ";
	if (fali != "")
	   alert("You have to fill the required fields!" + "\n\n" + "Please fill in:" + fali)
	else
	 document.obrazac.submit();
}