diff --git a/cara/apps/calculator/static/js/form.js b/cara/apps/calculator/static/js/form.js
index 89c6b646..ddfbe620 100644
--- a/cara/apps/calculator/static/js/form.js
+++ b/cara/apps/calculator/static/js/form.js
@@ -1,635 +1,632 @@
-/* -------HTML structure------- */
-function getChildElement(elem) {
-    // Get the element named in the given element's data-enables attribute.
-    return $(elem.data("enables"));
-}
-
-function insertErrorFor(referenceNode, text) {
-    var element = document.createElement("span");
-    element.setAttribute("class", "error_text");
-    element.classList.add("red_text");
-    element.innerHTML = "  " + text;
-    referenceNode.parentNode.insertBefore(element, referenceNode.nextSibling);
-}
-
-function removeErrorFor(referenceNode) {
-    $(referenceNode).next('span.error_text').remove();
-}
-
-/* -------Required fields------- */
-function require_fields(obj) {
-    switch ($(obj).attr('id')) {
-        case "room_data_volume":
-            require_room_volume(true);
-            require_room_dimensions(false);
-            break;
-        case "room_data_dimensions":
-            require_room_volume(false);
-            require_room_dimensions(true);
-            break;
-        case "mechanical_ventilation":
-            require_mechanical_ventilation(true);
-            require_natural_ventilation(false);
-            break;
-        case "natural_ventilation":
-            require_mechanical_ventilation(false);
-            require_natural_ventilation(true);
-            break;
-        case "window_sliding":
-            require_window_width(false);
-            break;
-        case "window_hinged":
-            require_window_width(true);
-            break;
-        case "mech_type_air_changes":
-            require_air_changes(true);
-            require_air_supply(false);
-            break;
-        case "mech_type_air_supply":
-            require_air_changes(false);
-            require_air_supply(true);
-            break;
-        case "windows_open_periodically":
-            require_venting(true);
-            break;
-        case "windows_open_permanently":
-            require_venting(false);
-            break;
-        case "hepa_yes":
-            require_hepa(true);
-            break;
-        case "hepa_no":
-            require_hepa(false);
-            break;
-        case "mask_on":
-            require_mask(true);
-            break;
-        case "mask_off":
-            require_mask(false);
-            break;
-        case "exposed_lunch_option_no":
-        case "infected_lunch_option_no":
-            require_lunch($(obj).attr('id'), false);
-            break;
-        case "exposed_lunch_option_yes":
-        case "infected_lunch_option_yes":
-            require_lunch($(obj).attr('id'), true);
-            break;
-        default:
-            break;
-    }
-}
-
-function unrequire_fields(obj) {
-    switch (obj.id) {
-        case "mechanical_ventilation":
-            require_mechanical_ventilation(false);
-            break;
-        case "natural_ventilation":
-            require_natural_ventilation(false);
-            break;
-        default:
-            break;
-    }
-}
-
-function require_room_volume(option) {
-    require_input_field("#room_volume", option);
-    set_disabled_status("#room_volume", !option);
-}
-
-function require_room_dimensions(option) {
-    require_input_field("#floor_area", option);
-    require_input_field("#ceiling_height", option);
-    set_disabled_status("#floor_area", !option);
-    set_disabled_status("#ceiling_height", !option);
-}
-
-function require_mechanical_ventilation(option) {
-    $("#mech_type_air_changes").prop('required', option);
-    $("#mech_type_air_supply").prop('required', option);
-    if (!option) {
-        require_input_field("#air_changes", option);
-        require_input_field("#air_supply", option);
-    }
-}
-
-function require_natural_ventilation(option) {
-    require_input_field("#windows_number", option);
-    require_input_field("#window_height", option);
-    require_input_field("#opening_distance", option);
-    $("#window_sliding").prop('required', option);
-    $("#window_hinged").prop('required', option);
-    $("#windows_open_permanently").prop('required', option);
-    $("#windows_open_periodically").prop('required', option);
-    if (!option) {
-        require_input_field("#window_width", option);
-        require_input_field("#windows_duration", option);
-        require_input_field("#windows_frequency", option);
-    }
-}
-
-function require_window_width(option) {
-    require_input_field("#window_width", option);
-    set_disabled_status("#window_width", !option);
-}
-
-function require_air_changes(option) {
-    require_input_field("#air_changes", option);
-    set_disabled_status("#air_changes", !option);
-}
-
-function require_air_supply(option) {
-    require_input_field("#air_supply", option);
-    set_disabled_status("#air_supply", !option);
-}
-
-function require_venting(option) {
-    require_input_field("#windows_duration", option);
-    require_input_field("#windows_frequency", option);
-    set_disabled_status("#windows_duration", !option);
-    set_disabled_status("#windows_frequency", !option);
-}
-
-function require_lunch(id, option) {
-    var activity = $(document.getElementById(id)).data('lunch-select');
-    var startObj = $(".start_time[data-lunch-for='"+activity+"']")[0];
-    var startID = '#'+$(startObj).attr('id');
-    var finishObj = $(".finish_time[data-lunch-for='"+activity+"']")[0];
-    var finishID = '#'+$(finishObj).attr('id');
-
-    require_input_field(startID, option);
-    require_input_field(finishID, option);
-    set_disabled_status(startID, !option);
-    set_disabled_status(finishID, !option);
-
-    if (!option) {
-        $(finishID).removeClass("red_border finish_time_error lunch_break_error");
-        removeErrorFor(finishObj);
-    } 
-    else {
-        if (startObj.value === "" && finishObj.value === "") {
-            startObj.value = "12:30";
-            finishObj.value = "13:30";
-        }
-        validateLunchBreak($(startObj).data('time-group'));
-    }
-}
-
-function require_mask(option) {
-    $("#mask_type_1").prop('required', option);
-    $("#mask_type_ffp2").prop('required', option);
-}
-
-function require_hepa(option) {
-    require_input_field("#hepa_amount", option);
-    set_disabled_status("#hepa_amount", !option);
-}
-
-function require_input_field(id, option) {
-    $(id).prop('required', option);
-    if (!option) {
-        removeInvalid(id);
-    }
-}
-
-function set_disabled_status(id, option) {
-    if (option)
-        $(id).addClass("disabled");
-    else
-        $(id).removeClass("disabled");
-}
-
-function setMaxInfectedPeople() {
-    $("#training_limit_error").hide();
-    var max = $("#total_people").val()
-
-    if ($("#activity_type").val() === "training") {
-        max = 1;
-        $("#training_limit_error").show();
-    }
-
-    $("#infected_people").attr("max", max);
-}
-
-function removeInvalid(id) {
-    if ($(id).hasClass("red_border")) {
-        $(id).val("");
-        $(id).removeClass("red_border");
-        removeErrorFor(id);
-    }
-}
-
-function on_ventilation_type_change() {
-    ventilation_types = $('input[type=radio][name=ventilation_type]');
-    ventilation_types.each(function (index) {
-        if (this.checked) {
-            getChildElement($(this)).show();
-            require_fields(this);
-        } else {
-            getChildElement($(this)).hide();
-            unrequire_fields(this);
-
-            //Clear invalid inputs for this newly hidden child element
-            removeInvalid("#"+getChildElement($(this)).find('input').not('input[type=radio]').attr('id'));
-        }
-    });
-}
-
-/* -------UI------- */
-
-function show_disclaimer() {
-    var dots = document.getElementById("dots");
-    var moreText = document.getElementById("more");
-    var btnText = document.getElementById("myBtn");
-
-    if (dots.style.display === "none") {
-        dots.style.display = "inline";
-        btnText.innerHTML = "Read more";
-        moreText.style.display = "none";
-    } else {
-        dots.style.display = "none";
-        btnText.innerHTML = "Read less";
-        moreText.style.display = "inline";
-    }
-}
-
-$("[data-has-radio]").on('click', function(event){
-    $($(this).data("has-radio")).click();
-});
-
-$("[data-has-radio]").on('change', function(event){
-    $($(this).data("has-radio")).click();
-});
-
-function toggle_split_breaks() {
-    $("#DIVinfected_breaks").toggle(this.checked);
-    $("#exposed_break_title").toggle(this.checked);
-    require_lunch("infected_lunch_option_yes", document.getElementById("infected_dont_have_breaks_with_exposed").checked);
-}
-
-/* -------Form validation------- */
-function validate_form(form) {
-    var submit = true;
-
-    // Activity times and lunch break times are co-dependent
-    // -> So if 1 fails it doesn't make sense to check the rest
-
-    //Validate all finish times
-    $("input[required].finish_time").each(function() {
-        var activity = $(this).data('lunch-for');
-        if (document.getElementById("infected_dont_have_breaks_with_exposed").checked || activity!="infected") {
-            if (!validateFinishTime(this)) {
-                submit = false;
-            }
-        }
-    });
-
-    //Validate all lunch breaks
-    if (submit) {
-        $("input[required].start_time[data-lunch-for]").each(function() {
-            var activity = $(this).data('lunch-for');
-            if (document.getElementById("infected_dont_have_breaks_with_exposed").checked || activity!="infected") {
-                if (!validateLunchBreak($(this).data('time-group'))) {
-                    submit = false;
-                }
-            }
-        });
-    }
-
-    //Check if breaks length >= activity length
-    if (submit) {
-        $("[data-lunch-for]").each(function() {
-            var activity = $(this).data('lunch-for');
-            if (document.getElementById("infected_dont_have_breaks_with_exposed").checked || activity!="infected") {
-                var activityBreaksObj= document.getElementById("activity_breaks");
-                removeErrorFor(activityBreaksObj);
-
-                var lunch_mins = 0;
-                if (document.getElementById(activity+"_lunch_option_yes").checked) {
-                    var lunch_start = document.getElementById(activity+"_lunch_start");
-                    var lunch_finish = document.getElementById(activity+"_lunch_finish");
-                    lunch_mins = parseTimeToMins(lunch_finish.value) - parseTimeToMins(lunch_start.value);
-                }
-
-                var coffee_breaks = parseInt(document.querySelector('input[name="'+activity+'_coffee_break_option"]:checked').value);
-                var coffee_duration = parseInt(document.getElementById(activity+"_coffee_duration").value);
-                var coffee_mins = coffee_breaks * coffee_duration;
-
-                var activity_start = document.getElementById(activity+"_start");
-                var activity_finish = document.getElementById(activity+"_finish");
-                var activity_mins = parseTimeToMins(activity_finish.value) - parseTimeToMins(activity_start.value);
-
-                if ((lunch_mins + coffee_mins) >= activity_mins) {
-                    insertErrorFor(activityBreaksObj, "Length of breaks >= Length of "+activity+" presence");
-                    submit = false;
-                }
-            }
-        });
-    }
-
-    //Validate all non zero values
-    $("input[required].non_zero").each(function() {
-        if (!validateValue(this)) {
-            submit = false;
-        }
-    });
-
-
-    //Validate window venting duration < venting frequency
-    if (!$("#windows_duration").hasClass("disabled")) {
-        var windowsDurationObj = document.getElementById("windows_duration");
-        var windowsFrequencyObj = document.getElementById("windows_frequency");
-        removeErrorFor(windowsFrequencyObj);
-
-        if (parseInt(windowsDurationObj.value) >= parseInt(windowsFrequencyObj.value)) {
-            insertErrorFor(windowsFrequencyObj, "Duration >= Frequency");
-            submit = false;
-        }
-    }
-
-    return submit;
-}
-
-function validateValue(obj) {
-    $(obj).removeClass("red_border");
-    removeErrorFor(obj);
-
-    if (!isLessThanZeroOrEmpty($(obj).val())) {
-        $(obj).addClass("red_border");
-        insertErrorFor(obj, "Value must be > 0");
-        return false;
-    }
-    return true;
-}
-
-function isLessThanZeroOrEmpty(value) {
-    if (value === "") return true;
-    if (value <= 0)
-        return false;
-    return true;
-}
-
-function validateDate(obj) {
-    $(obj).removeClass("red_border");
-    removeErrorFor(obj);
-
-    if (!isValidDateOrEmpty($(obj).val())) {
-        $(obj).addClass("red_border");
-        insertErrorFor(obj, "Incorrect date format");
-        return false;
-    }
-    return true;
-}
-
-function isValidDateOrEmpty(date) {
-    if (date === "") return true;
-    var matches = /^(\d+)[-\/](\d+)[-\/](\d+)$/.exec(date);
-    if (matches == null) return false;
-    var d = matches[1];
-    var m = matches[2];
-    var y = matches[3];
-    if (y > 2100 || y < 1900) return false;
-    var composedDate = new Date(y + '/' + m + '/' + d);
-    return composedDate.getDate() == d && composedDate.getMonth() + 1 == m && composedDate.getFullYear() == y;
-}
-
-function validateFinishTime(obj) {
-    var groupID = $(obj).data('time-group');
-    var startObj = $(".start_time[data-time-group='"+groupID+"']")[0];
-    var finishObj = $(".finish_time[data-time-group='"+groupID+"']")[0];
-
-    if ($(finishObj).hasClass("finish_time_error")) {
-        $(finishObj).removeClass("red_border finish_time_error");
-        removeErrorFor(finishObj);
-    }
-
-    //Check if finish time error (takes precedence over lunch break error)
-    var startTime = parseValToNumber(startObj.value);
-    var finishTime = parseValToNumber(finishObj.value);
-    if (startTime >= finishTime) {
-        $(finishObj).addClass("red_border finish_time_error");
-        removeErrorFor(finishObj);
-        insertErrorFor(finishObj, "Finish time must be after start");
-        return false;
-    }
-    return true;
-}
-
-function validateLunchBreak(lunchGroup) {
-    //Valid if lunch break not selected
-    if(document.getElementById(lunchGroup+"_option_no").checked)
-        return true;
-
-    var lunchStartObj = $(".start_time[data-time-group='"+lunchGroup+"']")[0];
-    var lunchFinishObj = $(".finish_time[data-time-group='"+lunchGroup+"']")[0];
-
-    //Skip if finish time error present (it takes precedence over lunch break error)
-    if ($(lunchStartObj).hasClass("finish_time_error") || $(lunchFinishObj).hasClass("finish_time_error"))
-        return false;
-
-    removeErrorFor(lunchFinishObj);
-    var valid = validateLunchTime(lunchStartObj) & validateLunchTime(lunchFinishObj);
-    if (!valid) {
-        insertErrorFor(lunchFinishObj, "Lunch break must be within presence times");
-    }
-
-    return valid;
-}
-
-//Check if exposed/infected lunch time within exposed/infected presence times
-function validateLunchTime(obj) {
-    var activityGroup = $(obj).data('lunch-for');
-    var activityStart = parseValToNumber($(".start_time[data-time-group='"+activityGroup+"']")[0].value);
-    var activityFinish = parseValToNumber($(".finish_time[data-time-group='"+activityGroup+"']")[0].value);
-
-    var time = parseValToNumber(obj.value);
-    $(obj).removeClass("red_border lunch_break_error");
-    if ((time < activityStart) || (time > activityFinish)) {
-        $(obj).addClass("red_border lunch_break_error");
-        return false;
-    }
-
-    return true;
-}
-
-function parseValToNumber(val) {
-    return parseInt(val.replace(':',''), 10);
-}
-
-function parseTimeToMins(cTime) {
-    var time = cTime.match(/(\d+):(\d+)/);
-    return parseInt(time[1]*60) + parseInt(time[2]);
-}
-
-/* -------On Load------- */
-$(document).ready(function () {
-
-    //Pre-fill form with known values
-    (new URL(decodeURIComponent(window.location.href))).searchParams.forEach((value, name) => {
-
-        //If element exists
-        if(document.getElementsByName(name).length > 0) {
-            var elemObj = document.getElementsByName(name)[0];
-
-            //Pre-select checked radios
-            if (elemObj.type === 'radio') {
-                // Calculator <= 1.5.0 used to send not-applicable in the URL for radios that
-                // weren't set. Now those are not sent at all, but we keep the behaviour for compatibility.
-                if (value !== 'not-applicable') {
-                    $('[name="'+name+'"][value="'+value+'"]').prop('checked',true);
-                }
-            }
-            //Pre-select checkboxes
-            else if (elemObj.type === 'checkbox') {
-                elemObj.checked = (value==1);
-            }
-
-            //Pre-select location
-            else if (elemObj.id === 'location_select') {
-                var location_option = document.createElement('option');
-                location_option.value = value;
-                location_option.innerHTML = value;
-                elemObj.append(location_option);
-            }
-
-            //Ignore 0 (default) values from server side
-            else if (!(elemObj.classList.contains("non_zero") || elemObj.classList.contains("remove_zero")) || (value != "0.0" && value != "0")) {
-                elemObj.value = value;
-                validateValue(elemObj);
-            }
-        }
-    });
-
-    // When the document is ready, deal with the fact that we may be here
-    // as a result of a forward/back browser action. If that is the case, update
-    // the visibility of some of our inputs.
-
-    // Chrome fix - on back button infected break DIV not shown
-    if (document.getElementById("infected_dont_have_breaks_with_exposed").checked) {
-        $("#DIVinfected_breaks").show();
-        $("#exposed_break_title").show();
-        require_lunch("infected_lunch_option_yes", true);
-    }
-
-    //Check all radio buttons previously selected
-    $("input[type=radio]:checked").each(function() {require_fields(this)});
-
-    // When the ventilation_type changes we want to make its respective
-    // children show/hide.
-    $("input[type=radio][name=ventilation_type]").change(on_ventilation_type_change);
-    // Call the function now to handle forward/back button presses in the browser.
-    on_ventilation_type_change();
-
-    // Setup the maximum number of people at page load (to handle back/forward),
-    // and update it when total people is changed.
-    setMaxInfectedPeople();
-    $("#total_people").change(setMaxInfectedPeople);
-    $("#activity_type").change(setMaxInfectedPeople);
-
-    //Validate all non zero values
-    $("input[required].non_zero").each(function() {validateValue(this)});
-    $(".non_zero").change(function() {validateValue(this)});
-
-    //Validate all finish times
-    $("input[required].finish_time").each(function() {validateFinishTime(this)});
-    $(".finish_time").change(function() {validateFinishTime(this)});
-    $(".start_time").change(function() {validateFinishTime(this)});
-
-    //Validate lunch times
-    $(".start_time[data-lunch-for]").each(function() {validateLunchBreak($(this).data('time-group'))});
-    $("[data-lunch-for]").change(function() {validateLunchBreak($(this).data('time-group'))});
-    $("[data-lunch-break]").change(function() {validateLunchBreak($(this).data('lunch-break'))});
-
-    $("#location_select").select2({
-        ajax: {
-            url: "https://geocode.arcgis.com/arcgis/rest/services/World/GeocodeServer/findAddressCandidates",
-            dataType: 'json',
-            delay: 250,
-            data: function(params) {
-                return {
-                    SingleLine: params.term, // search term
-                    f: 'json',
-                    page: params.page,
-                    outFields: 'country, location',
-                };
-            },
-            processResults: function(data, params) {
-                // parse the results into the format expected by Select2
-                // since we are using custom formatting functions we do not need to
-                // alter the remote JSON data, except to indicate that infinite
-                // scrolling can be used
-                params.page = params.page || 1;
-
-                return {
-                    results: data.candidates.map(function(candidate) {
-                        return {
-                            id: candidate.address,
-                            text: candidate.address,
-                            country: candidate.attributes.country,
-                            latitude: candidate.location.y,
-                            longitude: candidate.location.x,
-                        }
-                    }),
-                    pagination: {
-                        more: (params.page * 30) < data.candidates.length
-                    }
-                };
-            },
-            cache: true
-        },
-        placeholder: 'Search for a location',
-        minimumInputLength: 1,
-        templateResult: formatlocation,
-        templateSelection: formatLocationSelection
-    });
-});
-
-function formatlocation(location) {
-    if (location.loading) {
-        return location.text;
-    }
-
-    var $container = $(
-        "<div class='select2-result-location clearfix'>" +
-        "<div class='select2-result-location__meta'>" +
-        "<div class='select2-result-location__title'></div>" +
-        "</div>" +
-        "</div>"
-    );
-
-    $container.find(".select2-result-location__title").text(location.text + " (" + location.country + ")");
-    return $container;
-}
-
-function formatLocationSelection(location) {
-    console.log(location);
-    if (location.latitude != null && location.latitude != null) {
-        console.log('setting!');
-        console.log($('input[name="location_latitude"]'));
-        $('input[name="location_latitude"]').val(location.latitude);
-        $('input[name="location_longitude"]').val(location.longitude);
-    }
-    return location.text;
-}
-
-/* -------Debugging------- */
-function debug_submit(form) {
-
-    //Prevent default posting of form - put here to work in case of errors
-    event.preventDefault();
-
-    //Serialize the data in the form
-    var serializedData = objectifyForm($(form).serializeArray());
-
-    console.log(serializedData);
-
-    return false; //don't submit
-}
-
-function objectifyForm(formArray) {
-    var returnArray = {};
-    for (var i = 0; i < formArray.length; i++)
-        returnArray[formArray[i]['name']] = formArray[i]['value'];
-    return returnArray;
-}
+/* -------HTML structure------- */
+function getChildElement(elem) {
+  // Get the element named in the given element's data-enables attribute.
+  return $(elem.data("enables"));
+}
+
+function insertErrorFor(referenceNode, text) {
+  var element = document.createElement("span");
+  element.setAttribute("class", "error_text");
+  element.classList.add("red_text");
+  element.innerHTML = "&nbsp;&nbsp;" + text;
+  referenceNode.parentNode.insertBefore(element, referenceNode.nextSibling);
+}
+
+function removeErrorFor(referenceNode) {
+  $(referenceNode).next('span.error_text').remove();
+}
+
+/* -------Required fields------- */
+function require_fields(obj) {
+  switch ($(obj).attr('id')) {
+    case "room_data_volume":
+      require_room_volume(true);
+      require_room_dimensions(false);
+      break;
+    case "room_data_dimensions":
+      require_room_volume(false);
+      require_room_dimensions(true);
+      break;
+    case "mechanical_ventilation":
+      require_mechanical_ventilation(true);
+      require_natural_ventilation(false);
+      break;
+    case "natural_ventilation":
+      require_mechanical_ventilation(false);
+      require_natural_ventilation(true);
+      break;
+    case "window_sliding":
+      require_window_width(false);
+      break;
+    case "window_hinged":
+      require_window_width(true);
+      break;
+    case "mech_type_air_changes":
+      require_air_changes(true);
+      require_air_supply(false);
+      break;
+    case "mech_type_air_supply":
+      require_air_changes(false);
+      require_air_supply(true);
+      break;
+    case "windows_open_periodically":
+      require_venting(true);
+      break;
+    case "windows_open_permanently":
+      require_venting(false);
+      break;
+    case "hepa_yes":
+      require_hepa(true);
+      break;
+    case "hepa_no":
+      require_hepa(false);
+      break;
+    case "mask_on":
+      require_mask(true);
+      break;
+    case "mask_off":
+      require_mask(false);
+      break;
+    case "exposed_lunch_option_no":
+    case "infected_lunch_option_no":
+      require_lunch($(obj).attr('id'), false);
+      break;
+    case "exposed_lunch_option_yes":
+    case "infected_lunch_option_yes":
+      require_lunch($(obj).attr('id'), true);
+      break;
+    default:
+      break;
+  }
+}
+
+function unrequire_fields(obj) {
+  switch (obj.id) {
+    case "mechanical_ventilation":
+      require_mechanical_ventilation(false);
+      break;
+    case "natural_ventilation":
+      require_natural_ventilation(false);
+      break;
+    default:
+      break;
+  }
+}
+
+function require_room_volume(option) {
+  require_input_field("#room_volume", option);
+  set_disabled_status("#room_volume", !option);
+}
+
+function require_room_dimensions(option) {
+  require_input_field("#floor_area", option);
+  require_input_field("#ceiling_height", option);
+  set_disabled_status("#floor_area", !option);
+  set_disabled_status("#ceiling_height", !option);
+}
+
+function require_mechanical_ventilation(option) {
+  $("#mech_type_air_changes").prop('required', option);
+  $("#mech_type_air_supply").prop('required', option);
+  if (!option) {
+    require_input_field("#air_changes", option);
+    require_input_field("#air_supply", option);
+  }
+}
+
+function require_natural_ventilation(option) {
+  require_input_field("#windows_number", option);
+  require_input_field("#window_height", option);
+  require_input_field("#opening_distance", option);
+  $("#window_sliding").prop('required', option);
+  $("#window_hinged").prop('required', option);
+  $("#windows_open_permanently").prop('required', option);
+  $("#windows_open_periodically").prop('required', option);
+  if (!option) {
+    require_input_field("#window_width", option);
+    require_input_field("#windows_duration", option);
+    require_input_field("#windows_frequency", option);
+  }
+}
+
+function require_window_width(option) {
+  require_input_field("#window_width", option);
+  set_disabled_status("#window_width", !option);
+}
+
+function require_air_changes(option) {
+  require_input_field("#air_changes", option);
+  set_disabled_status("#air_changes", !option);
+}
+
+function require_air_supply(option) {
+  require_input_field("#air_supply", option);
+  set_disabled_status("#air_supply", !option);
+}
+
+function require_venting(option) {
+  require_input_field("#windows_duration", option);
+  require_input_field("#windows_frequency", option);
+  set_disabled_status("#windows_duration", !option);
+  set_disabled_status("#windows_frequency", !option);
+}
+
+function require_lunch(id, option) {
+  var activity = $(document.getElementById(id)).data('lunch-select');
+  var startObj = $(".start_time[data-lunch-for='"+activity+"']")[0];
+  var startID = '#'+$(startObj).attr('id');
+  var finishObj = $(".finish_time[data-lunch-for='"+activity+"']")[0];
+  var finishID = '#'+$(finishObj).attr('id');
+
+  require_input_field(startID, option);
+  require_input_field(finishID, option);
+  set_disabled_status(startID, !option);
+  set_disabled_status(finishID, !option);
+
+  if (!option) {
+    $(finishID).removeClass("red_border finish_time_error lunch_break_error");
+    removeErrorFor(finishObj);
+  }
+  else {
+    if (startObj.value === "" && finishObj.value === "") {
+      startObj.value = "12:30";
+      finishObj.value = "13:30";
+    }
+    validateLunchBreak($(startObj).data('time-group'));
+  }
+}
+
+function require_mask(option) {
+  $("#mask_type_1").prop('required', option);
+  $("#mask_type_ffp2").prop('required', option);
+}
+
+function require_hepa(option) {
+  require_input_field("#hepa_amount", option);
+  set_disabled_status("#hepa_amount", !option);
+}
+
+function require_input_field(id, option) {
+  $(id).prop('required', option);
+  if (!option) {
+    removeInvalid(id);
+  }
+}
+
+function set_disabled_status(id, option) {
+  if (option)
+    $(id).addClass("disabled");
+  else
+    $(id).removeClass("disabled");
+}
+
+function setMaxInfectedPeople() {
+  $("#training_limit_error").hide();
+  var max = $("#total_people").val()
+
+  if ($("#activity_type").val() === "training") {
+    max = 1;
+    $("#training_limit_error").show();
+  }
+
+  $("#infected_people").attr("max", max);
+}
+
+function removeInvalid(id) {
+  if ($(id).hasClass("red_border")) {
+    $(id).val("");
+    $(id).removeClass("red_border");
+    removeErrorFor(id);
+  }
+}
+
+function on_ventilation_type_change() {
+  ventilation_types = $('input[type=radio][name=ventilation_type]');
+  ventilation_types.each(function (index) {
+    if (this.checked) {
+      getChildElement($(this)).show();
+      require_fields(this);
+    } else {
+      getChildElement($(this)).hide();
+      unrequire_fields(this);
+
+      //Clear invalid inputs for this newly hidden child element
+      removeInvalid("#"+getChildElement($(this)).find('input').not('input[type=radio]').attr('id'));
+    }
+  });
+}
+
+/* -------UI------- */
+
+function show_disclaimer() {
+  var dots = document.getElementById("dots");
+  var moreText = document.getElementById("more");
+  var btnText = document.getElementById("myBtn");
+
+  if (dots.style.display === "none") {
+    dots.style.display = "inline";
+    btnText.innerHTML = "Read more";
+    moreText.style.display = "none";
+  } else {
+    dots.style.display = "none";
+    btnText.innerHTML = "Read less";
+    moreText.style.display = "inline";
+  }
+}
+
+$("[data-has-radio]").on('click', function(event){
+  $($(this).data("has-radio")).click();
+});
+
+$("[data-has-radio]").on('change', function(event){
+  $($(this).data("has-radio")).click();
+});
+
+function toggle_split_breaks() {
+  $("#DIVinfected_breaks").toggle(this.checked);
+  $("#exposed_break_title").toggle(this.checked);
+  require_lunch("infected_lunch_option_yes", document.getElementById("infected_dont_have_breaks_with_exposed").checked);
+}
+
+/* -------Form validation------- */
+function validate_form(form) {
+  var submit = true;
+
+  // Activity times and lunch break times are co-dependent
+  // -> So if 1 fails it doesn't make sense to check the rest
+
+  //Validate all finish times
+  $("input[required].finish_time").each(function() {
+    var activity = $(this).data('lunch-for');
+    if (document.getElementById("infected_dont_have_breaks_with_exposed").checked || activity!="infected") {
+      if (!validateFinishTime(this)) {
+        submit = false;
+      }
+    }
+  });
+
+  //Validate all lunch breaks
+  if (submit) {
+    $("input[required].start_time[data-lunch-for]").each(function() {
+      var activity = $(this).data('lunch-for');
+      if (document.getElementById("infected_dont_have_breaks_with_exposed").checked || activity!="infected") {
+        if (!validateLunchBreak($(this).data('time-group'))) {
+          submit = false;
+        }
+      }
+    });
+  }
+
+  //Check if breaks length >= activity length
+  if (submit) {
+    $("[data-lunch-for]").each(function() {
+      var activity = $(this).data('lunch-for');
+      if (document.getElementById("infected_dont_have_breaks_with_exposed").checked || activity!="infected") {
+        var activityBreaksObj= document.getElementById("activity_breaks");
+        removeErrorFor(activityBreaksObj);
+
+        var lunch_mins = 0;
+        if (document.getElementById(activity+"_lunch_option_yes").checked) {
+          var lunch_start = document.getElementById(activity+"_lunch_start");
+          var lunch_finish = document.getElementById(activity+"_lunch_finish");
+          lunch_mins = parseTimeToMins(lunch_finish.value) - parseTimeToMins(lunch_start.value);
+        }
+      
+        var coffee_breaks = parseInt(document.querySelector('input[name="'+activity+'_coffee_break_option"]:checked').value);
+        var coffee_duration = parseInt(document.getElementById(activity+"_coffee_duration").value);
+        var coffee_mins = coffee_breaks * coffee_duration;
+        
+        var activity_start = document.getElementById(activity+"_start");
+        var activity_finish = document.getElementById(activity+"_finish");
+        var activity_mins = parseTimeToMins(activity_finish.value) - parseTimeToMins(activity_start.value);
+
+        if ((lunch_mins + coffee_mins) >= activity_mins) {
+          insertErrorFor(activityBreaksObj, "Length of breaks >= Length of "+activity+" presence");
+          submit = false;
+        }
+      }
+    });
+  }
+
+  //Validate all non zero values
+  $("input[required].non_zero").each(function() {
+    if (!validateValue(this)) {
+      submit = false;
+    }
+  });
+
+
+  //Validate window venting duration < venting frequency
+  if (!$("#windows_duration").hasClass("disabled")) {
+    var windowsDurationObj = document.getElementById("windows_duration");
+    var windowsFrequencyObj = document.getElementById("windows_frequency");
+    removeErrorFor(windowsFrequencyObj);
+
+    if (parseInt(windowsDurationObj.value) >= parseInt(windowsFrequencyObj.value)) {
+      insertErrorFor(windowsFrequencyObj, "Duration >= Frequency");
+      submit = false;
+    }
+  }
+
+  return submit;
+}
+
+function validateValue(obj) {
+  $(obj).removeClass("red_border");
+  removeErrorFor(obj);
+
+  if (!isLessThanZeroOrEmpty($(obj).val())) {
+    $(obj).addClass("red_border");
+    insertErrorFor(obj, "Value must be > 0");
+    return false;
+  }
+  return true;
+}
+
+function isLessThanZeroOrEmpty(value) {
+  if (value === "") return true;
+  if (value <= 0)
+    return false;
+  return true;
+}
+
+function validateDate(obj) {
+  $(obj).removeClass("red_border");
+  removeErrorFor(obj);
+
+  if (!isValidDateOrEmpty($(obj).val())) {
+    $(obj).addClass("red_border");
+    insertErrorFor(obj, "Incorrect date format");
+    return false;
+  }
+  return true;
+}
+
+function isValidDateOrEmpty(date) {
+  if (date === "") return true;
+  var matches = /^(\d+)[-\/](\d+)[-\/](\d+)$/.exec(date);
+  if (matches == null) return false;
+  var d = matches[1];
+  var m = matches[2];
+  var y = matches[3];
+  if (y > 2100 || y < 1900) return false;
+  var composedDate = new Date(y + '/' + m + '/' + d);
+  return composedDate.getDate() == d && composedDate.getMonth() + 1 == m && composedDate.getFullYear() == y;
+}
+
+function validateFinishTime(obj) {
+  var groupID = $(obj).data('time-group');
+  var startObj = $(".start_time[data-time-group='"+groupID+"']")[0];
+  var finishObj = $(".finish_time[data-time-group='"+groupID+"']")[0];
+
+  if ($(finishObj).hasClass("finish_time_error")) {
+    $(finishObj).removeClass("red_border finish_time_error");
+    removeErrorFor(finishObj);
+  }
+
+  //Check if finish time error (takes precedence over lunch break error)
+  var startTime = parseValToNumber(startObj.value);
+  var finishTime = parseValToNumber(finishObj.value);
+  if (startTime >= finishTime) {
+    $(finishObj).addClass("red_border finish_time_error");
+    removeErrorFor(finishObj);
+    insertErrorFor(finishObj, "Finish time must be after start");
+    return false;
+  }
+  return true;
+}
+
+function validateLunchBreak(lunchGroup) {
+  //Valid if lunch break not selected
+  if(document.getElementById(lunchGroup+"_option_no").checked)
+    return true;
+
+  var lunchStartObj = $(".start_time[data-time-group='"+lunchGroup+"']")[0];
+  var lunchFinishObj = $(".finish_time[data-time-group='"+lunchGroup+"']")[0];
+
+  //Skip if finish time error present (it takes precedence over lunch break error)
+  if ($(lunchStartObj).hasClass("finish_time_error") || $(lunchFinishObj).hasClass("finish_time_error"))
+    return false;
+
+  removeErrorFor(lunchFinishObj);
+  var valid = validateLunchTime(lunchStartObj) & validateLunchTime(lunchFinishObj);
+  if (!valid) {
+    insertErrorFor(lunchFinishObj, "Lunch break must be within presence times");
+  }
+
+  return valid;
+}
+
+//Check if exposed/infected lunch time within exposed/infected presence times
+function validateLunchTime(obj) {
+  var activityGroup = $(obj).data('lunch-for');
+  var activityStart = parseValToNumber($(".start_time[data-time-group='"+activityGroup+"']")[0].value);
+  var activityFinish = parseValToNumber($(".finish_time[data-time-group='"+activityGroup+"']")[0].value);
+
+  var time = parseValToNumber(obj.value);
+  $(obj).removeClass("red_border lunch_break_error");
+  if ((time < activityStart) || (time > activityFinish)) {
+    $(obj).addClass("red_border lunch_break_error");
+    return false;
+  }
+
+  return true;
+}
+
+function parseValToNumber(val) {
+  return parseInt(val.replace(':',''), 10);
+}
+
+function parseTimeToMins(cTime) {
+  var time = cTime.match(/(\d+):(\d+)/);
+  return parseInt(time[1]*60) + parseInt(time[2]);
+}
+
+/* -------On Load------- */
+$(document).ready(function () {
+
+  //Pre-fill form with known values
+  (new URL(decodeURIComponent(window.location.href))).searchParams.forEach((value, name) => {
+
+    //If element exists
+    if(document.getElementsByName(name).length > 0) {
+      var elemObj = document.getElementsByName(name)[0];
+
+      //Pre-select checked radios
+      if (elemObj.type === 'radio') {
+        // Calculator <= 1.5.0 used to send not-applicable in the URL for radios that
+        // weren't set. Now those are not sent at all, but we keep the behaviour for compatibility.
+        if (value !== 'not-applicable') {
+          $('[name="'+name+'"][value="'+value+'"]').prop('checked',true);
+        }
+      }
+      //Pre-select checkboxes
+      else if (elemObj.type === 'checkbox') {
+        elemObj.checked = (value==1);
+      }
+      //Pre-select location
+      else if (elemObj.id === 'location_select') {
+        var location_option = document.createElement('option');
+        location_option.value = value;
+        location_option.innerHTML = value;
+        elemObj.append(location_option);
+      }
+      //Ignore 0 (default) values from server side
+      else if (!(elemObj.classList.contains("non_zero") || elemObj.classList.contains("remove_zero")) || (value != "0.0" && value != "0")) {
+        elemObj.value = value;
+        validateValue(elemObj);
+      }
+    }
+  });
+
+  // When the document is ready, deal with the fact that we may be here
+  // as a result of a forward/back browser action. If that is the case, update
+  // the visibility of some of our inputs.
+
+  // Chrome fix - on back button infected break DIV not shown
+  if (document.getElementById("infected_dont_have_breaks_with_exposed").checked) {
+    $("#DIVinfected_breaks").show();
+    $("#exposed_break_title").show();
+    require_lunch("infected_lunch_option_yes", true);
+  }
+
+  //Check all radio buttons previously selected
+  $("input[type=radio]:checked").each(function() {require_fields(this)});
+
+  // When the ventilation_type changes we want to make its respective
+  // children show/hide.
+  $("input[type=radio][name=ventilation_type]").change(on_ventilation_type_change);
+  // Call the function now to handle forward/back button presses in the browser.
+  on_ventilation_type_change();
+
+  // Setup the maximum number of people at page load (to handle back/forward),
+  // and update it when total people is changed.
+  setMaxInfectedPeople();
+  $("#total_people").change(setMaxInfectedPeople);
+  $("#activity_type").change(setMaxInfectedPeople);
+
+  //Validate all non zero values
+  $("input[required].non_zero").each(function() {validateValue(this)});
+  $(".non_zero").change(function() {validateValue(this)});
+
+  //Validate all finish times
+  $("input[required].finish_time").each(function() {validateFinishTime(this)});
+  $(".finish_time").change(function() {validateFinishTime(this)});
+  $(".start_time").change(function() {validateFinishTime(this)});
+
+  //Validate lunch times
+  $(".start_time[data-lunch-for]").each(function() {validateLunchBreak($(this).data('time-group'))});
+  $("[data-lunch-for]").change(function() {validateLunchBreak($(this).data('time-group'))});
+  $("[data-lunch-break]").change(function() {validateLunchBreak($(this).data('lunch-break'))});
+
+  $("#location_select").select2({
+    ajax: {
+      url: "https://geocode.arcgis.com/arcgis/rest/services/World/GeocodeServer/findAddressCandidates",
+      dataType: 'json',
+      delay: 250,
+      data: function(params) {
+        return {
+          SingleLine: params.term, // search term
+          f: 'json',
+          page: params.page,
+          outFields: 'country, location',
+        };
+      },
+      processResults: function(data, params) {
+        // parse the results into the format expected by Select2
+        // since we are using custom formatting functions we do not need to
+        // alter the remote JSON data, except to indicate that infinite
+        // scrolling can be used
+        params.page = params.page || 1;
+
+        return {
+          results: data.candidates.map(function(candidate) {
+            return {
+              id: candidate.address,
+              text: candidate.address,
+              country: candidate.attributes.country,
+              latitude: candidate.location.y,
+              longitude: candidate.location.x,
+            }
+          }),
+          pagination: {
+            more: (params.page * 30) < data.candidates.length
+          }
+        };
+      },
+      cache: true
+    },
+    placeholder: 'Search for a location',
+    minimumInputLength: 1,
+    templateResult: formatlocation,
+    templateSelection: formatLocationSelection
+  });
+});
+
+function formatlocation(location) {
+  if (location.loading) {
+    return location.text;
+  }
+
+  var $container = $(
+    "<div class='select2-result-location clearfix'>" +
+    "<div class='select2-result-location__meta'>" +
+    "<div class='select2-result-location__title'></div>" +
+    "</div>" +
+    "</div>"
+  );
+
+  $container.find(".select2-result-location__title").text(location.text + " (" + location.country + ")");
+  return $container;
+}
+
+function formatLocationSelection(location) {
+  if (location.latitude != null && location.latitude != null) {
+    console.log('setting!');
+    console.log($('input[name="location_latitude"]'));
+    $('input[name="location_latitude"]').val(location.latitude);
+    $('input[name="location_longitude"]').val(location.longitude);
+  }
+  return location.text;
+}
+
+/* -------Debugging------- */
+function debug_submit(form) {
+
+  //Prevent default posting of form - put here to work in case of errors
+  event.preventDefault();
+
+  //Serialize the data in the form
+  var serializedData = objectifyForm($(form).serializeArray());
+
+  console.log(serializedData);
+
+  return false; //don't submit
+}
+
+function objectifyForm(formArray) {
+  var returnArray = {};
+  for (var i = 0; i < formArray.length; i++)
+    returnArray[formArray[i]['name']] = formArray[i]['value'];
+  return returnArray;
+}