function _adoptHideImage()
{
    var displayElement = _oE( "image-display" );
    displayElement.innerHTML = "";
    displayElement.style.visibility = "hidden";
}

function _adoptHidePopup()
{
    var displayElement = _oE( "popup" );
    displayElement.style.visibility = "hidden";
    _oE( "popup-content" ).innerHTML = "";
}


function _adoptHideSubmit()
{
    _oE( "submitting" ).style.visibility = "hidden";
    _oE( "submitting-ok-button" ).style.visibility = "hidden";
}


function _adoptShowImage( __src )
{
    var displayElement = _oE( "image-display" );
    displayElement.innerHTML = "<img class=\"image-display\" src=\"" + __src + "\" onclick=\"_adoptHideImage();\"><br /><br /><span class=\"tiny-white\">click the image again to close</span>";
    displayElement.style.visibility = "visible";
}


function _adoptShowPopup()
{
    var displayElement = _oE( "popup" );
    displayElement.style.visibility = "visible";
}


function _adoptShowSubmit()
{
    var displayElement = _oE( "submitting" );
    displayElement.style.visibility = "visible";
}


function _adoptSubmitForm()
{
    var showPopup = false;
    var popupContent = _oE( "popup-content" );
    popupContent.innerHTML = "";

    var name = _v( "a_name" );
    var email = _v( "a_email" );
    var phone = _v( "a_phone" );
    var howMany = _v( "a_how_many" );
    var poisonNo = _c( "a_poison_no" );
    var feralOk = _c( "a_feral_yes" );
    var feralNok = _c( "a_feral_no" );
    var building = _v( "a_building" );
    var location = _v( "a_location" );
    var heatNone = _c( "a_heat_none" );
    var poisonYes = _c( "a_poison_yes" );
    var heatRoom = _c( "a_heat_room" );
    var heatOther = _v( "a_heat_other" );
    var winterCare = _c( "a_winter_care" );
    var transOther = _c( "a_trans_other" );
    var transHaveRoom = _c( "a_trans_room" );
    var otherAnimals = _v( "a_other_animals" );
    var heatInsulated = _c( "a_heat_insulated" );
    var heatLivestock = _c( "a_heat_livestock" );
    var otherComments = _v( "a_other_comments" );
    var unfixedCatsAround = _v( "a_unfixed_cats" );
    var transHaveCrate = _c( "a_trans_have_crate" );
    var transNeedCrate = _c( "a_trans_need_crate" );
    var transOtherText = _c( "a_trans_other_text" );
    var transHaveEnclosure = _c( "a_trans_enclosure" );

    if ( name == null )
    {
        showPopup = true;
        popupContent.innerHTML += "<strong>Name</strong><br />";
    }

    if ( phone == null )
    {
        showPopup = true;
        popupContent.innerHTML += "<strong>Phone Number</strong><br />";
    }

    if ( email == null )
    {
        showPopup = true;
        popupContent.innerHTML += "<strong>Email Address</strong><br />";
    }

    if ( location == null )
    {
        showPopup = true;
        popupContent.innerHTML += "<strong>Location</strong><br />";
    }

    if ( building == null )
    {
        showPopup = true;
        popupContent.innerHTML += "<strong>Tell us about your place.</strong><br />";
    }

    if ( otherAnimals == null )
    {
        showPopup = true;
        popupContent.innerHTML += "<strong>Are there other animals there?</strong><br />";
    }

    if ( winterCare !== true )
    {
        showPopup = true;
        popupContent.innerHTML += "<strong>It is important that the cats are fed/watered daily.</strong><br />";
    }

    if ( !(heatLivestock || heatRoom || heatInsulated || heatNone) && heatOther == null )
    {
        showPopup = true;
        popupContent.innerHTML += "<strong>Type of heat source options for the cats in winter.</strong><br />";
    }

    if ( unfixedCatsAround == null )
    {
        showPopup = true;
        popupContent.innerHTML += "<strong>Are there unfixed cats there?</strong><br />";
    }

    if ( howMany == null )
    {
        showPopup = true;
        popupContent.innerHTML += "<strong>How many cats are you looking for?</strong><br />";
    }

    if ( !(poisonNo || poisonYes) )
    {
        showPopup = true;
        popupContent.innerHTML += "<strong>Any poisons on site?</strong><br />";
    }

    if ( !(transHaveCrate || transNeedCrate || transHaveEnclosure || transHaveRoom || transOther) )
    {
        showPopup = true;
        popupContent.innerHTML += "<strong>For the trantsition period at your place.</strong><br />";
    }

    if ( !(feralNok || feralOk) )
    {
        showPopup = true;
        popupContent.innerHTML += "<strong>Are you OK with timid/semi-feral cats?</strong><br />";
    }

    if ( showPopup )
    {
        _adoptShowPopup();
        return;
    }

    if ( feralNok )
    {
        _oE( "submitting-title" ).innerHTML = "Wait...";
        _oE( "submitting-ok-button" ).style.visibility = "visible";
        _oE( "submitting-content" ).innerHTML = "You selected that you were uncomfortable with feral cats - the last question. We will not submit your adoption request." +
            "<br /><br />If this was a mistake, click 'Ok' and then change your answer for the last question before trying again.";
        _adoptShowSubmit();
        return;
    }

    _oE( "submitting-ok-button" ).style.visibility = "hidden";
    _oE( "submitting-title" ).innerHTML = "Submitting Your Information";
    _oE( "submitting-content" ).innerHTML = "Please hang on while we submit your request.";
    _adoptShowSubmit();

    var xhttp = new XMLHttpRequest();
    xhttp.onreadystatechange = function ()
    {
        if ( this.status >= 400 )
        {
            _oE( "submitting-title" ).innerHTML = "We're Sorry";
            _oE( "submitting-ok-button" ).style.visibility = "visible";
            _oE( "submitting-content" ).innerHTML = "Something went wrong on our end handling your request. Please try again soon.";
        }
        else if ( this.status == 200 )
        {
            _oE( "submitting-title" ).innerHTML = "Thank You!";
            _oE( "submitting-ok-button" ).style.visibility = "visible";
            _oE( "submitting-content" ).innerHTML = "Your request has been received! Thank you! We will be in touch as soon as possible.";
        }
    };

    xhttp.open( "POST", "/handle/adoptform", true );
    xhttp.setRequestHeader( "Content-type", "application/x-www-form-urlencoded" );

    var heatChoice = heatLivestock ? "livestock" : heatRoom ? "room" : heatInsulated ? "insulated" : heatNone ? "none" : heatOther;
    var transitionChoice = transHaveCrate ? "havecrate" : transNeedCrate ? "needcrate" : transHaveEnclosure ? "haveenclosure" : transHaveRoom ? "haveroom" : ("other: " + transOtherText );

    var data = "name=" + encodeURIComponent( name )
        + "&email=" + encodeURIComponent( email )
        + "&phone=" + encodeURIComponent( phone )
        + "&howMany=" + encodeURIComponent( howMany )
        + "&poison=" + encodeURIComponent( poisonYes ? "Yes" : "No" )
        + "&building=" + encodeURIComponent( building )
        + "&location=" + encodeURIComponent( location )
        + "&heat=" + encodeURIComponent( heatChoice )
        + "&transition=" + encodeURIComponent( transitionChoice )
        + "&animals=" + encodeURIComponent( otherAnimals )
        + "&comments=" + encodeURIComponent( otherComments )
        + "&unfixed=" + encodeURIComponent( unfixedCatsAround );

    xhttp.send( data );
}

function _c( __id )
{
    return _oE( __id ).checked === true;
}

function _v( __id )
{
    var value = _oE( __id ).value;

    if ( typeof value == "string" )
    {
        value = value.trim();
        if ( value === "" )
        {
            value = null;
        }
    }

    return _uton( value );
}

function _oE( __id )
{
    var toReturn = document.getElementById( __id );

    if ( _uton( toReturn ) == null )
    {
        return {};
    }

    return toReturn;
}

function _uton( _ )
{
    if ( typeof _ === "undefined" )
    {
        return null;
    }
    return _;
}