function conf() {
    var form = document.forms["main_form"];
    form.cmd.value = "confirm";
    form.submit();
}

function modify() {
    var form = document.forms["main_form"];
    form.cmd.value = "modify";
    form.submit();
}

function completeForm() {
    var form = document.forms["main_form"];
    form.cmd.value = "complete";
    form.submit();
}

function page(val) {
    var form = document.forms["main_form"];
    form.id.value   = val;
    form.page.value = val;
    form.submit();
}