var form = window.document.forms["add_litnitsu"];
function heddenEmptyFields() {
form = window.document.forms["add_litnitsu"];
    if (form.elements["mater_osn[1]"].value == '')      form.elements["mater_osn[1]"].style.display =      'none';
    if (form.elements["mater_stup[1]"].value == '')     form.elements["mater_stup[1]"].style.display =     'none';
    if (form.elements["mater_podsten[1]"].value == '')  form.elements["mater_podsten[1]"].style.display =  'none';
    if (form.elements["type_ograzhd[1]"].value == '')   form.elements["type_ograzhd[1]"].style.display =   'none';
    if (form.elements["balyasina[1]"].value == '')      form.elements["balyasina[1]"].style.display =      'none';
    if (form.elements["balyasina[2]"].value == '')      form.elements["balyasina[2]"].style.display =      'none';
    if (form.elements["poruchen[1]"].value == '')       form.elements["poruchen[1]"].style.display =       'none';
    if (form.elements["poruchen[2]"].value == '')       form.elements["poruchen[2]"].style.display =       'none';
    document.getElementById("id_marsh").style.display = 'none';
    form.elements["type_marh"].style.display = 'none';
}

function showOsn() {
    if (form.elements["mater_osn[1]"].value != '') {
        form.elements["mater_osn[1]"].style.display = 'inline';
        return;
    }
        else {
             form.elements["mater_osn[1]"].style.display = 'none';
             return;
        }

}

function showStup() {
    if (form.elements["mater_stup[1]"].value != '') {
        form.elements["mater_stup[1]"].style.display = 'inline';
        return;
    }
        else {
             form.elements["mater_stup[1]"].style.display = 'none';
             return;
        }

}

function showPodsten() {
    if (form.elements["mater_podsten[1]"].value != '') {
        form.elements["mater_podsten[1]"].style.display = 'inline';
        return;
    }
        else {
             form.elements["mater_podsten[1]"].style.display = 'none';
             form.elements["mater_podsten[1]"].value = '';
             return;
        }
}

function showType() {
    if (form.elements["type_ograzhd[0]"].value == 3 || form.elements["type_ograzhd[0]"].value == 4) {
        form.elements["type_ograzhd[1]"].style.display = 'inline';
    }
    else {
        form.elements["type_ograzhd[1]"].style.display = 'none';
        form.elements["type_ograzhd[1]"].value = '';
    }
}

function showBalyas() {
    if (form.elements["balyasina[1]"].value != '') {
        form.elements["balyasina[1]"].style.display = 'inline';
    }
    else {
        form.elements["balyasina[1]"].style.display = 'none';
        form.elements["balyasina[1]"].value = '';
    }
    if (form.elements["balyasina[1]"].value == 4) {
        form.elements["balyasina[2]"].style.display = 'inline';
    }
    else {
        form.elements["balyasina[2]"].style.display = 'none';
        form.elements["balyasina[2]"].value = '';
    }
}

function showPoruch() {
    if (form.elements["poruchen[1]"].value != '') {
        form.elements["poruchen[1]"].style.display = 'inline';
    }
    else {
        form.elements["poruchen[1]"].style.display = 'none';
        form.elements["poruchen[1]"].value = '';
    }
    if (form.elements["poruchen[1]"].value == 3) {
        form.elements["poruchen[2]"].style.display = 'inline';
    }
        else {
            form.elements["poruchen[2]"].style.display = 'none';
            form.elements["poruchen[2]"].value = '';
        }
}
function showPodsten2() {
    if (form.elements["podstenok"].value == 0) {
        form.elements["mater_podsten[0]"].style.display = 'inline';
        form.elements["mater_podsten[1]"].style.display = 'inline';
    }
    else {
        form.elements["mater_podsten[0]"].style.display = 'none';
        form.elements["mater_podsten[1]"].style.display = 'none';
        form.elements["mater_podsten[0]"].value = '';
        form.elements["mater_podsten[1]"].value = '';
    }
}

function showTypeMarsh() {
    span = document.getElementById("id_marsh");
    if (form.elements["num_marsh"].value > 1) {
        span.style.display = 'inline';
        form.elements["type_marh"].style.display = 'inline';
    }
    else {
        span.style.display = 'none';
        form.elements["type_marh"].style.display = 'none';
        form.elements["type_marh"].value = '';
    }
}