diff --git a/html/early.js b/html/early.js
index e68b067..af498b1 100644
--- a/html/early.js
+++ b/html/early.js
@@ -660,3 +660,35 @@ if (!Object.entries) {
     return resArray;
   };
 }
+
+const filters = {};
+
+function Filter(arg) {
+    this.key = arg.key;
+    this.name = arg.name || arg.key;
+
+    this.id = 'filters_' + this.key;
+
+    filters[this.key] = this;
+
+    this.init();
+}
+
+Filter.prototype.reset = function() {
+    jQuery('#' + this.id).val("");
+    jQuery('#' + this.id).blur();
+    this.update();
+}
+
+Filter.prototype.init = function() {
+    jQuery(this.container).append((
+        '<tr><td><form id="'+ this.id +'">'
+        + '<div class="infoBlockTitleText">Filter by '+ this.name +':</div>'
+        + '<input id="'+ this.id+ '_input" name="textInput" type="text" class="searchInput" maxlength="4096">'
+        + '<button class="formButton" type="submit">Filter</button>'
+        + '<button class="formButton" type="reset">Reset</button>'
+        + '</form></td></tr>'
+    ));
+    jQuery('#' + this.id).on('submit', this.update);
+    jQuery('#' + this.id).on('reset', this.reset);
+}
diff --git a/html/index.html b/html/index.html
index 229369f..48fd4ed 100644
--- a/html/index.html
+++ b/html/index.html
@@ -842,7 +842,7 @@
                 </table>
               </div>
               <div id="tab-filters">
-                <table cellpadding="0" cellspacing="0">
+                <table cellpadding="0" cellspacing="0" id="filterTable">
                   <tr>
                     <td>
                       <form id="altitude_filter_form">
diff --git a/html/planeObject.js b/html/planeObject.js
index 77df50a..d81d22f 100644
--- a/html/planeObject.js
+++ b/html/planeObject.js
@@ -2399,7 +2399,7 @@ PlaneObject.prototype.cross180 = function(on_ground, is_leg) {
 };
 
 PlaneObject.prototype.dataChanged = function() {
-    this.refreshTR = true;
+    this.refreshTR = 0;
 }
 
 PlaneObject.prototype.isNonIcao = function() {
diff --git a/html/script.js b/html/script.js
index 98f8c63..4e3d9f2 100644
--- a/html/script.js
+++ b/html/script.js
@@ -1217,6 +1217,18 @@ function initFlagFilter(colors) {
     });
 }
 
+function initFilters() {
+    new Filter({
+        key: 'callsign',
+        name: 'Callsign',
+        container: "#filterTable",
+    });
+
+    initSourceFilter(tableColors.unselected);
+    initFlagFilter(tableColors.unselected);
+}
+
+
 function push_history() {
     jQuery("#loader_progress").attr('max',nHistoryItems*2);
     for (let i = 0; i < nHistoryItems; i++) {
@@ -2023,14 +2035,16 @@ function initMap() {
             if (loadFinished) {
                 TAR.planeMan.redraw();
                 refreshFilter();
+                initLegend(tableColors.unselected);
+                initSourceFilter(tableColors.unselected);
+                initFlagFilter(tableColors.unselected);
             }
-
-            initLegend(tableColors.unselected);
-            initSourceFilter(tableColors.unselected);
-            initFlagFilter(tableColors.unselected);
         }
     });
 
+    initLegend(tableColors.unselected);
+
+    initFilters();
 
     new Toggle({
         key: "MapDim",
@@ -3113,11 +3127,11 @@ function refreshFeatures() {
             if (plane.tr == null) {
                 plane.makeTR(planeRowTemplate.cloneNode(true));
                 plane.tr.id = plane.icao;
-                plane.refreshTR = true;
+                plane.refreshTR = 0;
             }
 
-            if (plane.refreshTR || plane.selected != plane.selectCache) {
-                plane.refreshTR = false;
+            if (now - plane.refreshTR > 5 || plane.selected != plane.selectCache) {
+                plane.refreshTR = now;
                 let colors = tableColors.unselected;
                 let bgColor = "#F8F8F8"