// JavaScript Document

function check_add_subject_to_schedule(form_id,lang)
{
    var text;
    var form = document.getElementById(form_id);
    if (lang == "en")
    {
        text =["You did not add any groups to the subject."];
    }
    else if (lang == "sk")
    {
        text = ["You did not add any groups to the subject."];
    }
    if (form.groups.value == "")
    {
        alert(text[0]);
        form.groups.focus();
        return false;
    }
    else
    {        
        form.submit();
        return true;
    }
}

function check_change_subject_in_schedule(form_id,lang)
{
    var text;
    var form = document.getElementById(form_id);
    if (lang == "en")
    {
        text =["You did not fill up any groups."];
    }
    else if (lang == "sk")
    {
        text = ["You did not fill up any groups."];
    }
    if (form.groups.value == "")
    {
        alert(text[0]);
        form.groups.focus();
        return false;
    }
    else
    {
        form.submit();
        return true;
    }
}

function check_add_teacher(form_id,lang)
{
    var text;
    var form = document.getElementById(form_id);
    if (lang == "en")
    {
        text =["You did not fill up name.","You did not fill up surname."];
    }
    else if (lang == "sk")
    {
        text = ["You did not fill up name.","You did not fill up surname."];
    }
    if (form.name.value =="")
    {
        alert(text[0]);
        form.name.focus();
        return false;
    }
    else if (form.surname.value =="")
    {
        alert(text[1]);
        form.surname.focus();
        return false;
    }
    else
    {
        form.submit();
        return true;
    }
}

function check_change_teacher(form_id,lang)
{
    var text;
    var form = document.getElementById(form_id);
    if (lang == "en")
    {
        text =["You did not fill up name.","You did not fill up surname."];
    }
    else if (lang == "sk")
    {
        text = ["You did not fill up name.","You did not fill up surname."];
    }
    if (form.name.value =="")
    {
        alert(text[0]);
        form.name.focus();
        return false;
    }
    else if (form.surname.value =="")
    {
        alert(text[1]);
        form.surname.focus();
        return false;
    }
    else
    {
        form.submit();
        return true;
    }
}