function validate_form ( ){valid = true;if ( document.form5.ime.value == "" ){alert ( "Molimo unesite ime i prezime..." );valid = false;return valid;}if ( document.form5.email.value == "" ){alert ( "Molimo unesite Vas email..." );valid = false;return valid;}if ( document.form5.telefon.value == "" ){alert ( "Molimo unesite broj telefona..." );valid = false;return valid;}if ( document.form5.sifra.value == "" ){alert ( "Niste uneli sifru..." );valid = false;return valid;}return valid;}