diff --git a/dve.css b/dve.css
index 64e9cdd..27874c9 100644
--- a/dve.css
+++ b/dve.css
@@ -57,66 +57,6 @@ html, body {
   top: auto;
   bottom: 10px;
 }
-.layer-selector {
-  padding: 0;
-  min-width: 190px;
-}
-.layer-selector-button {
-  width: 100%;
-  max-width: 280px;
-  border: 0;
-  background: transparent;
-  padding: 6px 24px 6px 8px;
-  text-align: left;
-  font: inherit;
-  cursor: pointer;
-  white-space: nowrap;
-  overflow: hidden;
-  text-overflow: ellipsis;
-}
-.layer-selector-button::after {
-  content: "▾";
-  position: absolute;
-  right: 8px;
-}
-.layer-selector-menu {
-  display: none;
-  min-width: 260px;
-  max-width: 360px;
-  max-height: 65vh;
-  overflow: auto;
-  border-top: 1px solid rgba(0,0,0,0.15);
-}
-.layer-selector.open .layer-selector-menu {
-  display: block;
-}
-.layer-group-title {
-  padding: 8px 8px 4px;
-  font-weight: bold;
-  color: #555;
-}
-.layer-option,
-.layer-overlay-option {
-  display: block;
-  box-sizing: border-box;
-  width: 100%;
-  border: 0;
-  background: transparent;
-  padding: 5px 8px 5px 18px;
-  text-align: left;
-  font: inherit;
-  cursor: pointer;
-}
-.layer-option:hover,
-.layer-overlay-option:hover {
-  background: rgba(0,0,0,0.08);
-}
-.layer-option.active {
-  font-weight: bold;
-}
-.layer-overlay-option input {
-  margin-right: 6px;
-}
 
 .crosshair {
   position: absolute;
diff --git a/dve.js b/dve.js
index 0738ebe..4c99de8 100644
--- a/dve.js
+++ b/dve.js
@@ -1,18 +1,12 @@
 const json_files = [
   "tileconfig/osm.json",
   "tileconfig/mapycom.json",
-  "tileconfig/praha.json",
-  "tileconfig/others.json"
+  "tileconfig/praha.json"
 ];
 
 const center = [50.08804, 14.42076];
 const zoom = 14;
 const mapCounts = [1, 2, 4, 6, 9];
-const layerCategories = {
-  classic: "Klasické",
-  ortho: "Ortomapy",
-  overlay: "Overlaye"
-};
 
 let syncing = false;
 let urlUpdateTimer = null;
@@ -20,151 +14,18 @@ let activeMouseMap = null;
 let activeMousePoint = null;
 let activeMouseLatLng = null;
 
-let TILE_SERVERS = {};
+let TILE_SERVERS = [];
 let maps = [];
-let baseLayers = [];
-let overlayLayers = [];
+let layers = [];
 let crosshairs = [];
 
-function getLayerCategory(name, config) {
-  const category = (config.category || "").toString().toLowerCase();
-  const lowerName = name.toLowerCase();
-
-  if (["overlay", "overlays", "prekryv", "překryv"].includes(category)) return "overlay";
-  if (["ortho", "ortomap", "orthomap", "orthophoto", "ortofoto", "ortomapa"].includes(category)) return "ortho";
-  if (["classic", "base", "normal", "klasicke", "klasické"].includes(category)) return "classic";
-
-  if (lowerName.includes("overlay")) return "overlay";
-  if (lowerName.includes("orto")) return "ortho";
-
-  return "classic";
-}
-
-function getLayerNamesByCategory(category) {
-  return Object.keys(TILE_SERVERS).filter(name => getLayerCategory(name, TILE_SERVERS[name]) === category);
-}
-
-function getBaseLayerNames() {
-  return Object.keys(TILE_SERVERS).filter(name => getLayerCategory(name, TILE_SERVERS[name]) !== "overlay");
-}
-
-function getValidBaseLayerName(name) {
-  if (name && TILE_SERVERS[name] && getLayerCategory(name, TILE_SERVERS[name]) !== "overlay") return name;
-
-  return getBaseLayerNames()[0] || Object.keys(TILE_SERVERS)[0];
-}
-
-function getValidOverlayNames(names) {
-  const selected = [];
-
-  names.forEach(name => {
-    if (
-      !selected.includes(name) &&
-      TILE_SERVERS[name] &&
-      getLayerCategory(name, TILE_SERVERS[name]) === "overlay"
-    ) {
-      selected.push(name);
-    }
-  });
-
-  return selected;
-}
-
-function closeLayerSelectors(except) {
-  document.querySelectorAll(".layer-selector.open").forEach(selector => {
-    if (selector !== except) selector.classList.remove("open");
-  });
-}
-
-function updateLayerSelectorLabel(selector) {
-  const button = selector.querySelector(".layer-selector-button");
-  const state = getLayerSelectorState(selector.dataset.index);
-  button.textContent = state.base + (state.overlays.length ? " +" + state.overlays.length : "");
-
-  selector.querySelectorAll(".layer-option").forEach(option => {
-    option.classList.toggle("active", option.dataset.layer === state.base);
-  });
-}
-
-function addLayerGroup(menu, title, names, overlay, selector) {
-  if (!names.length) return;
-
-  const groupTitle = document.createElement("div");
-  groupTitle.className = "layer-group-title";
-  groupTitle.textContent = title;
-  menu.appendChild(groupTitle);
-
-  names.forEach(name => {
-    if (overlay) {
-      const label = document.createElement("label");
-      const input = document.createElement("input");
-      label.className = "layer-overlay-option";
-      input.type = "checkbox";
-      input.dataset.layer = name;
-      input.checked = selector._initialOverlays.includes(name);
-      label.appendChild(input);
-      label.appendChild(document.createTextNode(name));
-      menu.appendChild(label);
-
-      input.addEventListener("change", e => {
-        const index = parseInt(selector.dataset.index, 10);
-        setOverlayLayer(index, name, e.target.checked);
-        updateLayerSelectorLabel(selector);
-        writeUrlState(maps[index]);
-      });
-    } else {
-      const option = document.createElement("button");
-      option.type = "button";
-      option.className = "layer-option";
-      option.dataset.layer = name;
-      option.textContent = name;
-      menu.appendChild(option);
-
-      option.addEventListener("click", () => {
-        const index = parseInt(selector.dataset.index, 10);
-        selector.dataset.baseLayer = name;
-        setBaseLayer(index, name);
-        updateLayerSelectorLabel(selector);
-        selector.classList.remove("open");
-        writeUrlState(maps[index]);
-      });
-    }
-  });
-}
-
-function fillLayerSelector(selector, index, state) {
-  const baseLayer = getValidBaseLayerName(state.base);
-  const overlays = getValidOverlayNames(state.overlays || []);
-
-  selector.innerHTML = "";
-  selector.dataset.index = index;
-  selector.dataset.baseLayer = baseLayer;
-  selector._initialOverlays = overlays;
-
-  const button = document.createElement("button");
-  button.type = "button";
-  button.className = "layer-selector-button";
-  selector.appendChild(button);
-
-  const menu = document.createElement("div");
-  menu.className = "layer-selector-menu";
-  selector.appendChild(menu);
-
-  addLayerGroup(menu, layerCategories.classic, getLayerNamesByCategory("classic"), false, selector);
-  addLayerGroup(menu, layerCategories.ortho, getLayerNamesByCategory("ortho"), false, selector);
-  addLayerGroup(menu, layerCategories.overlay, getLayerNamesByCategory("overlay"), true, selector);
-
-  ["click", "mousedown", "dblclick", "wheel", "touchstart"].forEach(type => {
-    selector.addEventListener(type, e => e.stopPropagation());
-  });
-
-  button.addEventListener("click", () => {
-    const open = !selector.classList.contains("open");
-    closeLayerSelectors(selector);
-    selector.classList.toggle("open", open);
-  });
-
-  updateLayerSelectorLabel(selector);
+function fillDropdown(select) {
+  for (const name in TILE_SERVERS) {
+    const opt = document.createElement("option");
+    opt.value = name;
+    opt.textContent = name;
+    select.appendChild(opt);
+  }
 }
 
 function readUrlState() {
@@ -196,31 +57,23 @@ function readUrlState() {
   }
 
   for (let i = 1; i <= state.count; i++) {
-    state.layers.push({
-      base: params.get("layer" + i),
-      overlays: params.getAll("overlay" + i)
-    });
+    const layer = params.get("layer" + i);
+
+    if (layer) state.layers.push(layer);
   }
 
   return state;
 }
 
-function getLayerSelectorState(index) {
-  const selector = document.getElementById("select" + (parseInt(index, 10) + 1));
-  const overlays = [];
+function getSelectedLayers(count) {
+  const selected = [];
 
-  selector.querySelectorAll(".layer-overlay-option input:checked").forEach(input => {
-    overlays.push(input.dataset.layer);
-  });
+  for (let i = 1; i <= count; i++) {
+    const select = document.getElementById("select" + i);
+    if (select && select.value) selected.push(select.value);
+  }
 
-  return {
-    base: selector.dataset.baseLayer,
-    overlays
-  };
-}
-
-function addUrlParam(parts, key, value) {
-  if (value) parts.push(key + "=" + encodeURIComponent(value));
+  return selected;
 }
 
 function writeUrlState(map) {
@@ -229,18 +82,15 @@ function writeUrlState(map) {
   urlUpdateTimer = setTimeout(() => {
     const c = map.getCenter();
     const count = parseInt(document.getElementById("mapCountSelector").value, 10);
-    const parts = [];
     let hash = "#map=" + map.getZoom() + "/" + c.lat.toFixed(5) + "/" + c.lng.toFixed(5);
 
-    parts.push("count=" + count);
+    hash += "&count=" + count;
 
-    for (let i = 0; i < count; i++) {
-      const state = getLayerSelectorState(i);
-      addUrlParam(parts, "layer" + (i + 1), state.base);
-      state.overlays.forEach(name => addUrlParam(parts, "overlay" + (i + 1), name));
-    }
+    const selected = getSelectedLayers(count);
+    selected.forEach((name, index) => {
+      hash += "&layer" + (index + 1) + "=" + encodeURIComponent(name);
+    });
 
-    hash += "&" + parts.join("&");
     history.replaceState(null, "", hash);
   }, 100);
 }
@@ -259,14 +109,15 @@ function sync(source) {
   updateCrosshairs();
 }
 
-function createLayer(config, zIndex) {
+function setLayer(map, config, currentLayer) {
+  if (currentLayer) map.removeLayer(currentLayer);
+
   if (config.type === "xyz") {
     return L.tileLayer(config.url, {
       maxZoom: 19,
       tileSize: 256,
-      zIndex,
       referrerPolicy: "strict-origin-when-cross-origin"
-    });
+    }).addTo(map);
   }
 
   if (config.type === "wms") {
@@ -276,40 +127,8 @@ function createLayer(config, zIndex) {
       transparent: config.transparent ?? true,
       version: config.version || "1.3.0",
       attribution: config.attribution || "",
-      zIndex,
       referrerPolicy: "strict-origin-when-cross-origin"
-    });
-  }
-}
-
-function setLayer(map, config, currentLayer, zIndex) {
-  if (currentLayer) map.removeLayer(currentLayer);
-
-  return createLayer(config, zIndex).addTo(map);
-}
-
-function bringOverlayLayersToFront(index) {
-  Object.values(overlayLayers[index]).forEach(layer => {
-    layer.setZIndex(100);
-    layer.bringToFront();
-  });
-}
-
-function setBaseLayer(index, name) {
-  baseLayers[index] = setLayer(maps[index], TILE_SERVERS[name], baseLayers[index], 1);
-  bringOverlayLayersToFront(index);
-}
-
-function setOverlayLayer(index, name, enabled) {
-  if (enabled) {
-    if (!overlayLayers[index][name]) {
-      overlayLayers[index][name] = createLayer(TILE_SERVERS[name], 100).addTo(maps[index]);
-    }
-
-    overlayLayers[index][name].bringToFront();
-  } else if (overlayLayers[index][name]) {
-    maps[index].removeLayer(overlayLayers[index][name]);
-    delete overlayLayers[index][name];
+    }).addTo(map);
   }
 }
 
@@ -413,11 +232,13 @@ function init() {
   const mapCountSelector = document.getElementById("mapCountSelector");
   fillMapCountDropdown(mapCountSelector);
 
-  document.addEventListener("click", () => closeLayerSelectors());
-
   for (let i = 1; i <= 9; i++) {
-    const selector = document.getElementById("select" + i);
-    fillLayerSelector(selector, i - 1, urlState.layers[i - 1] || {});
+    const select = document.getElementById("select" + i);
+    fillDropdown(select);
+
+    if (urlState.layers[i - 1] && TILE_SERVERS[urlState.layers[i - 1]]) {
+      select.value = urlState.layers[i - 1];
+    }
 
     const map = L.map("map" + i, { center: urlState.center, zoom: urlState.zoom, zoomControl: false });
     map.on("move", () => sync(map));
@@ -426,14 +247,17 @@ function init() {
     L.control.zoom({ position: "topright" }).addTo(map);
 
     maps.push(map);
-    baseLayers.push(null);
-    overlayLayers.push({});
+    layers.push(null);
     crosshairs.push(createCrosshair(map));
     initCrosshair(map);
 
-    const layerState = getLayerSelectorState(i - 1);
-    setBaseLayer(i - 1, layerState.base);
-    layerState.overlays.forEach(name => setOverlayLayer(i - 1, name, true));
+    layers[i - 1] = setLayer(map, TILE_SERVERS[select.value], layers[i - 1]);
+
+    select.addEventListener("change", e => {
+      const key = e.target.value;
+      layers[i - 1] = setLayer(map, TILE_SERVERS[key], layers[i - 1]);
+      writeUrlState(map);
+    });
   }
 
   mapCountSelector.value = urlState.count;
diff --git a/index.html b/index.html
index 04ec9a8..e535ec3 100644
--- a/index.html
+++ b/index.html
@@ -31,39 +31,39 @@
 <body>
   <div id="container" data-count="2">
     <div class="map-wrapper">
-      <div id="select1" class="selector layer-selector"></div>
+      <select id="select1" class="selector"></select>
       <div id="map1" class="map"></div>
     </div>
     <div class="map-wrapper">
-      <div id="select2" class="selector layer-selector"></div>
+      <select id="select2" class="selector"></select>
       <div id="map2" class="map"></div>
     </div>
     <div class="map-wrapper hidden">
-      <div id="select3" class="selector layer-selector"></div>
+      <select id="select3" class="selector"></select>
       <div id="map3" class="map"></div>
     </div>
     <div class="map-wrapper hidden">
-      <div id="select4" class="selector layer-selector"></div>
+      <select id="select4" class="selector"></select>
       <div id="map4" class="map"></div>
     </div>
     <div class="map-wrapper hidden">
-      <div id="select5" class="selector layer-selector"></div>
+      <select id="select5" class="selector"></select>
       <div id="map5" class="map"></div>
     </div>
     <div class="map-wrapper hidden">
-      <div id="select6" class="selector layer-selector"></div>
+      <select id="select6" class="selector"></select>
       <div id="map6" class="map"></div>
     </div>
     <div class="map-wrapper hidden">
-      <div id="select7" class="selector layer-selector"></div>
+      <select id="select7" class="selector"></select>
       <div id="map7" class="map"></div>
     </div>
     <div class="map-wrapper hidden">
-      <div id="select8" class="selector layer-selector"></div>
+      <select id="select8" class="selector"></select>
       <div id="map8" class="map"></div>
     </div>
     <div class="map-wrapper hidden">
-      <div id="select9" class="selector layer-selector"></div>
+      <select id="select9" class="selector"></select>
       <div id="map9" class="map"></div>
     </div>
   </div>
diff --git a/tileconfig/osm.json b/tileconfig/osm.json
index 36df021..5dd483e 100644
--- a/tileconfig/osm.json
+++ b/tileconfig/osm.json
@@ -2,53 +2,5 @@
   "OpenStreetMap": {
     "url": "https://tile.openstreetmap.org/{z}/{x}/{y}.png",
     "type": "xyz"
-  },
-  "OpenStreetMap DE": {
-    "url": "https://tile.openstreetmap.de/{z}/{x}/{y}.png",
-    "type": "xyz"
-  },
-  "OpenStreetMap HOT": {
-    "url": "https://{s}.tile.openstreetmap.fr/hot/{z}/{x}/{y}.png",
-    "type": "xyz"
-  },
-  "CyclOSM Lite overlay": {
-    "url": "https://{s}.tile-cyclosm.openstreetmap.fr/cyclosm-lite/{z}/{x}/{y}.png",
-    "type": "xyz"
-  },
-  "OpenTopoMap": {
-    "url": "https://{s}.tile.opentopomap.org/{z}/{x}/{y}.png",
-    "type": "xyz"
-  },
-  "ÖPNVKarte": {
-    "url": "https://tile.memomaps.de/tilegen/{z}/{x}/{y}.png",
-    "type": "xyz"
-  },
-  "OpenRailwayMap Standard overlay": {
-    "url": "https://{s}.tiles.openrailwaymap.org/standard/{z}/{x}/{y}.png",
-    "type": "xyz"
-  },
-  "OpenRailwayMap Maxspeed overlay": {
-    "url": "https://{s}.tiles.openrailwaymap.org/maxspeed/{z}/{x}/{y}.png",
-    "type": "xyz"
-  },
-  "OpenRailwayMap Signals overlay": {
-    "url": "https://{s}.tiles.openrailwaymap.org/signals/{z}/{x}/{y}.png",
-    "type": "xyz"
-  },
-  "Waymarked Trails Hiking overlay": {
-    "url": "https://tile.waymarkedtrails.org/hiking/{z}/{x}/{y}.png",
-    "type": "xyz"
-  },
-  "Waymarked Trails Cycling overlay": {
-    "url": "https://tile.waymarkedtrails.org/cycling/{z}/{x}/{y}.png",
-    "type": "xyz"
-  },
-  "Waymarked Trails Riding overlay": {
-    "url": "https://tile.waymarkedtrails.org/riding/{z}/{x}/{y}.png",
-    "type": "xyz"
-  },
-  "OpenSeaMap Seamarks overlay": {
-    "url": "https://tiles.openseamap.org/seamark/{z}/{x}/{y}.png",
-    "type": "xyz"
   }
 }
diff --git a/tileconfig/others.json b/tileconfig/others.json
deleted file mode 100755
index 198ebe3..0000000
--- a/tileconfig/others.json
+++ /dev/null
@@ -1,89 +0,0 @@
-{
-  "CARTO Positron": {
-    "url": "https://cartodb-basemaps-{s}.global.ssl.fastly.net/light_all/{z}/{x}/{y}.png",
-    "type": "xyz"
-  },
-  "CARTO Dark Matter": {
-    "url": "https://cartodb-basemaps-{s}.global.ssl.fastly.net/dark_all/{z}/{x}/{y}.png",
-    "type": "xyz"
-  },
-  "CARTO Voyager": {
-    "url": "https://cartodb-basemaps-{s}.global.ssl.fastly.net/rastertiles/voyager/{z}/{x}/{y}.png",
-    "type": "xyz"
-  },
-  "Geoapify OSM Bright Smooth API key": {
-    "url": "https://maps.geoapify.com/v1/tile/osm-bright-smooth/{z}/{x}/{y}.png?apiKey=YOUR_GEOAPIFY_KEY",
-    "type": "xyz"
-  },
-  "Lima Labs Carto demo": {
-    "url": "https://cdn.lima-labs.com/{z}/{x}/{y}.png?api=demo",
-    "type": "xyz"
-  },
-  "Esri World Imagery": {
-    "url": "https://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer/tile/{z}/{y}/{x}",
-    "type": "xyz",
-    "category": "ortho"
-  },
-  "Esri World Street Map": {
-    "url": "https://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer/tile/{z}/{y}/{x}",
-    "type": "xyz"
-  },
-  "Esri World Topo Map": {
-    "url": "https://server.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer/tile/{z}/{y}/{x}",
-    "type": "xyz"
-  },
-  "Esri NatGeo World Map": {
-    "url": "https://server.arcgisonline.com/ArcGIS/rest/services/NatGeo_World_Map/MapServer/tile/{z}/{y}/{x}",
-    "type": "xyz"
-  },
-  "Esri World Terrain": {
-    "url": "https://server.arcgisonline.com/ArcGIS/rest/services/World_Terrain_Base/MapServer/tile/{z}/{y}/{x}",
-    "type": "xyz"
-  },
-  "Esri World Shaded Relief": {
-    "url": "https://server.arcgisonline.com/ArcGIS/rest/services/World_Shaded_Relief/MapServer/tile/{z}/{y}/{x}",
-    "type": "xyz"
-  },
-  "Esri World Physical": {
-    "url": "https://server.arcgisonline.com/ArcGIS/rest/services/World_Physical_Map/MapServer/tile/{z}/{y}/{x}",
-    "type": "xyz"
-  },
-  "Esri Ocean Basemap": {
-    "url": "https://server.arcgisonline.com/ArcGIS/rest/services/Ocean/World_Ocean_Base/MapServer/tile/{z}/{y}/{x}",
-    "type": "xyz"
-  },
-  "Esri World Gray Canvas": {
-    "url": "https://server.arcgisonline.com/ArcGIS/rest/services/Canvas/World_Light_Gray_Base/MapServer/tile/{z}/{y}/{x}",
-    "type": "xyz"
-  },
-  "USGS Topo": {
-    "url": "https://basemap.nationalmap.gov/arcgis/rest/services/USGSTopo/MapServer/tile/{z}/{y}/{x}",
-    "type": "xyz"
-  },
-  "USGS Imagery Only": {
-    "url": "https://basemap.nationalmap.gov/arcgis/rest/services/USGSImageryOnly/MapServer/tile/{z}/{y}/{x}",
-    "type": "xyz",
-    "category": "ortho"
-  },
-  "USGS Imagery Topo": {
-    "url": "https://basemap.nationalmap.gov/arcgis/rest/services/USGSImageryTopo/MapServer/tile/{z}/{y}/{x}",
-    "type": "xyz",
-    "category": "ortho"
-  },
-  "USGS Shaded Relief": {
-    "url": "https://basemap.nationalmap.gov/arcgis/rest/services/USGSShadedReliefOnly/MapServer/tile/{z}/{y}/{x}",
-    "type": "xyz"
-  },
-  "USGS Hydrography overlay": {
-    "url": "https://basemap.nationalmap.gov/arcgis/rest/services/USGSHydroCached/MapServer/tile/{z}/{y}/{x}",
-    "type": "xyz"
-  },
-  "ČÚZK Ortofoto ČR Web Mercator": {
-    "url": "https://ags.cuzk.gov.cz/arcgis1/rest/services/ORTOFOTO_WM/MapServer/tile/{z}/{y}/{x}",
-    "type": "xyz"
-  },
-  "ČÚZK Základní topografická mapa ČR Web Mercator": {
-    "url": "https://ags.cuzk.gov.cz/arcgis1/rest/services/ZTM_WM/MapServer/tile/{z}/{y}/{x}",
-    "type": "xyz"
-  }
-}