diff --git a/web/css/overlay.css b/web/css/overlay.css
deleted file mode 100644
index 28714ebf5..000000000
--- a/web/css/overlay.css
+++ /dev/null
@@ -1,49 +0,0 @@
-.overlayMask {
-	position: absolute;
-	opacity: 0.6;
-	filter: alpha(opacity=60);
-	-ms-filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=60);
-	z-index: 999;
-	background: #aaaaaa;
-}
-
-.overlay {
-	display: none;
-    position: absolute;
-    background-color: #f0f0f0;
-    border: 2px solid #555555;
-    -moz-border-radius: 4px;
-    z-index: 1000;
-    overflow: hidden;
-}
-
-.overlayHeader {
-    float: left;
-    background-color: #853131;
-    width: 100%;
-    border-bottom: 1px solid #666666;
-    color: black;
-}
-
-.overlayTitle {
-    float: left;
-    padding: 10px 6px;
-    font-weight: bold;
-    width: auto;
-}
-
-.overlayToolbar {
-    float: right;
-    font-weight: bold;
-    padding: 6px 4px;
-    width: auto;
-}
-
-.overlayBody {
-    float: left;
-    width: 100%;
-}
-
-.overlayContent {
-    padding: 4px 4px 6px;
-}
diff --git a/web/js/overlay.js b/web/js/overlay.js
deleted file mode 100644
index 84547c53f..000000000
--- a/web/js/overlay.js
+++ /dev/null
@@ -1,118 +0,0 @@
-var Overlay = new Class({
-  Implements: [Options, Events],
-  initialize: function( id, options ) {
-    this.setOptions( options );
-
-    this.mask = new Mask( document.body, {'maskMargins': false, 'class': 'overlayMask'} );
-
-    this.id = id?id:'overlay';
-    if ( typeOf(this.id) == 'string' ) {
-      if ( $(this.id) ) {
-        this.element = $(this.id);
-      }
-    } else {
-      this.element = this.id;
-      this.id = this.element.get('id');
-    }
-    if ( !this.element ) {
-      this.element = new Element( 'div', {'id': this.id, 'class': 'overlay', 'styles': {'display': 'none'}} );
-      if ( this.options.title || this.options.buttons ) {
-        var overlayHeader = new Element( 'div', {'class': 'overlayHeader'} );
-        if ( this.options.title ) {
-          var overlayTitle = new Element( 'div', {'class': 'overlayTitle', 'text': this.options.title} );
-          overlayHeader.grab( overlayTitle );
-        }
-        if ( this.options.buttons ) {
-          var overlayToolbar = new Element( 'div', {'class': 'overlayToolbar'} );
-          this.options.buttons.each(
-              function( button ) {
-                var overlayButton = new Element( 'button', {'text': button.text} );
-                if ( button.id ) {
-                  overlayButton.setProperty( 'id', button.id );
-                }
-                if ( button.events ) {
-                  overlayButton.set( 'events', events );
-                }
-                overlayToolbar.grab( overlayButton );
-              }
-          );
-          overlayHeader.grab( overlayTitle );
-        }
-        this.element.grab( overlayHeader );
-        var overlayBody = new Element( 'div', {'class': 'overlayBody'} );
-        var overlayContent = new Element( 'div', {'class': 'overlayContent'} );
-        overlayContent.grab( this.options.content );
-        overlayBody.grab( overlayContent );
-        this.element.grab( overlayBody );
-      }
-      this.target = document.id(this.options.target) || document.id(document.body);
-      this.element.inject( this.target );
-    }
-  },
-  show: function() {
-    this.mask.show();
-    window.addEventListener( 'resize', this.update.bind(this), {passive: true} );
-    window.addEventListener( 'scroll', this.update.bind(this), {passive: true} );
-    this.element.tween( 'opacity', [0, 1.0] );
-    this.element.show();
-    this.element.position();
-    this.mask.position();
-  },
-  hideComplete: function() {
-    this.element.hide();
-    this.mask.hide();
-  },
-  hide: function() {
-    new Fx.Tween( this.element, {duration: 400, transition: Fx.Transitions.Sine, onComplete: this.hideComplete.bind(this)} ).start( 'opacity', 1.0, 0 );
-  },
-  update: function() {
-    this.element.position();
-    this.mask.position();
-  },
-  showAnimation: function() {
-    showOverlay();
-
-    //console.log( "Showing overlay loading" );
-    if ( !this.loading ) {
-      this.loading = new Element( 'div', {'id': 'loading'+this.key, 'styles': {'display': 'none'}} );
-      this.loading.grab( this.loadingImage );
-      document.body.grab( this.loading );
-    }
-    updateOverlayLoading();
-    this.loading.setStyle( 'display', 'block' );
-    window.addEventListener( 'resize', this.update.bind(this), {passive: true} );
-    window.addEventListener( 'scroll', this.update.bind(this), {passive: true} );
-  },
-  hideAnimation: function() {
-    if ( this.loading ) {
-      this.loading.setStyle( 'display', 'none' );
-    }
-  }
-});
-
-function setupOverlays() {
-  try {
-    $$('.overlay').each(
-        function( overlay ) {
-          overlay.element = new Overlay( overlay.get('id') );
-          overlay.getElements('.overlayCloser').each(
-              function( closer ) {
-                closer.addEvent( 'click', function() {
-                  overlay.element.hide();
-                } );
-              }
-          );
-          overlay.overlayShow = function() {
-            overlay.element.show();
-          };
-          overlay.overlayHide = function() {
-            overlay.element.hide();
-          };
-        }
-    );
-  } catch ( e ) {
-    alert( e );
-  }
-}
-
-window.addEventListener( 'DOMContentLoaded', setupOverlays );
diff --git a/web/skins/classic/includes/functions.php b/web/skins/classic/includes/functions.php
index e7b952a4a..268db4824 100644
--- a/web/skins/classic/includes/functions.php
+++ b/web/skins/classic/includes/functions.php
@@ -109,7 +109,6 @@ if ( file_exists("skins/$skin/css/$css/graphics/favicon.ico") ) {
 }
 echo output_cache_busted_stylesheet_links(array(
   'css/reset.css',
-  'css/overlay.css',
   'css/font-awesome.min.css',
   'css/bootstrap.min.css',
   'css/bootstrap-table.min.css',
@@ -931,13 +930,8 @@ function xhtmlFooter() {
 ?>
   <script src="<?php echo cache_bust($skinJsFile) ?>"></script>
   <script src="<?php echo cache_bust('js/logger.js')?>"></script>
-<?php 
-  if ($basename == 'watch' or $basename == 'log' ) {
-  // This is used in the log popup for the export function. Not sure if it's used anywhere else
-?>
-    <script src="<?php echo cache_bust('js/overlay.js') ?>"></script>
 <?php
-  } else if ( $basename == 'monitor' ) {
+  if ( $basename == 'monitor' ) {
     echo output_script_if_exists(array('js/leaflet/leaflet.js'), false);
   } ?>
   <script nonce="<?php echo $cspNonce; ?>">$j('.chosen').chosen();</script>