// JavaScript Documentfunction checkform ( form ){// ** START **if (form.name.value == "") {alert( "Please fill all required filelds: name" );form.name.focus();return false ;}if (form.surname.value == "") {alert( "Please fill all required filelds: surname" );form.surname.focus();return false ;}if (form.email.value == "") {alert( "Please fill all required filelds: email" );form.email.focus();return false ;}if (form.htelefon.value == "") {alert( "Please fill all required filelds: home telefon" );form.htelefon.focus();return false ;}if (form.mtelefon.value == "") {alert( "Please fill all required filelds: mobile phone" );form.mtelefon.focus();return false ;}// ** END **return true ;}