From 834ed6ede5d35d8a06ddcc51d216b3e2453da65a Mon Sep 17 00:00:00 2001
From: eug-L <eugene4198@gmail.com>
Date: Tue, 4 Jun 2024 15:24:56 +0800
Subject: [PATCH 1/8] fix ajax headers not propagated to navigator

---
 src/viewer.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/viewer.js b/src/viewer.js
index 5431626f..d4e762be 100644
--- a/src/viewer.js
+++ b/src/viewer.js
@@ -515,6 +515,8 @@ $.Viewer = function( options ) {
             crossOriginPolicy: this.crossOriginPolicy,
             animationTime:     this.animationTime,
             drawer:            this.drawer.getType(),
+            loadTilesWithAjax: this.loadTilesWithAjax,
+            ajaxHeaders:       this.ajaxHeaders,
         });
     }
 

From 35d468c4db81013cad396c720f8e44211356f60f Mon Sep 17 00:00:00 2001
From: eug-L <eugene4198@gmail.com>
Date: Sun, 9 Jun 2024 20:52:37 +0800
Subject: [PATCH 2/8] propagate ajaxWithCredentials to navigator

---
 src/viewer.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/viewer.js b/src/viewer.js
index d4e762be..9da4cd9f 100644
--- a/src/viewer.js
+++ b/src/viewer.js
@@ -517,6 +517,7 @@ $.Viewer = function( options ) {
             drawer:            this.drawer.getType(),
             loadTilesWithAjax: this.loadTilesWithAjax,
             ajaxHeaders:       this.ajaxHeaders,
+            ajaxWithCredentials: this.ajaxWithCredentials,
         });
     }
 

From fd74ea3dca9a414328312461e6f0f7c312ab9e11 Mon Sep 17 00:00:00 2001
From: Ian Gilman <ian@iangilman.com>
Date: Mon, 10 Jun 2024 09:27:44 -0700
Subject: [PATCH 3/8] Changelog for #2539

---
 changelog.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/changelog.txt b/changelog.txt
index 525f28e6..c9afb51d 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -22,6 +22,7 @@ OPENSEADRAGON CHANGELOG
 * Fixed: The navigator wouldn't update its tracking rectangle when the navigator was resized (#2491 @pearcetm)
 * Fixed: The drawer would improperly crop when the viewport was flipped and a tiled image was rotated (#2511 @pearcetm, @eug-L)
 * Fixed: Flipped viewport caused image to be flipped again when going fullscreen or resizing (#2518 @pearcetm)
+* Fixed: Viewer ajax options (loadTilesWithAjax, ajaxHeaders, and ajaxWithCredentials) weren't being propogated to the navigator. (#2539 @eug-L)
 
 4.1.1:
 

From db0ab104281cdf506e40ef0f0d3c462ebdff39f5 Mon Sep 17 00:00:00 2001
From: Mark Salsbery <msalsbery@hotmail.com>
Date: Fri, 14 Jun 2024 14:49:42 -0700
Subject: [PATCH 4/8] Added avif to supported image formats (#2439)

---
 changelog.txt        | 1 +
 src/openseadragon.js | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/changelog.txt b/changelog.txt
index c9afb51d..a5fdeca2 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -7,6 +7,7 @@ OPENSEADRAGON CHANGELOG
 * DEPRECATION: The OpenSeadragon.createCallback function is no longer recommended (#2367 @akansjain)
 * The viewer now uses WebGL when available (#2310, #2462, #2466, #2468, #2469, #2472, #2478, #2488, #2492, #2521, #2537 @pearcetm, @Aiosa, @thec0keman)
 * Added webp to supported image formats (#2455 @BeebBenjamin)
+* Added avif to supported image formats (#2439 @msalsbery)
 * Introduced maxTilesPerFrame option to allow loading more tiles simultaneously (#2387 @jetic83)
 * Now when creating a viewer or navigator, we leave its position style alone if possible (#2393 @VIRAT9358)
 * Added getter & setter for Viewport.maxZoomPixelRatio (#2506 @eug-L)
diff --git a/src/openseadragon.js b/src/openseadragon.js
index 66036afa..249d7725 100644
--- a/src/openseadragon.js
+++ b/src/openseadragon.js
@@ -2631,6 +2631,7 @@ function OpenSeadragon( options ){
          * Preexisting formats that are not being updated are left unchanged.
          * By default, the defined formats are
          * <pre><code>{
+         *      avif: true,
          *      bmp:  false,
          *      jpeg: true,
          *      jpg:  true,
@@ -2698,6 +2699,7 @@ function OpenSeadragon( options ){
 
 
     var FILEFORMATS = {
+            avif: true,
             bmp:  false,
             jpeg: true,
             jpg:  true,

From 88d7eb8c600949943f0d54dbe94229cde62057a2 Mon Sep 17 00:00:00 2001
From: Mark Salsbery <msalsbery@hotmail.com>
Date: Fri, 14 Jun 2024 14:51:31 -0700
Subject: [PATCH 5/8] Update changelog.txt

---
 changelog.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/changelog.txt b/changelog.txt
index a5fdeca2..2c399a37 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -7,7 +7,7 @@ OPENSEADRAGON CHANGELOG
 * DEPRECATION: The OpenSeadragon.createCallback function is no longer recommended (#2367 @akansjain)
 * The viewer now uses WebGL when available (#2310, #2462, #2466, #2468, #2469, #2472, #2478, #2488, #2492, #2521, #2537 @pearcetm, @Aiosa, @thec0keman)
 * Added webp to supported image formats (#2455 @BeebBenjamin)
-* Added avif to supported image formats (#2439 @msalsbery)
+* Added avif to supported image formats (#2544 @msalsbery)
 * Introduced maxTilesPerFrame option to allow loading more tiles simultaneously (#2387 @jetic83)
 * Now when creating a viewer or navigator, we leave its position style alone if possible (#2393 @VIRAT9358)
 * Added getter & setter for Viewport.maxZoomPixelRatio (#2506 @eug-L)

From 3ed100d2180ecc1adf49517cf7aa8abfeaf5e6fe Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Tue, 18 Jun 2024 23:24:55 +0000
Subject: [PATCH 6/8] Bump braces from 3.0.2 to 3.0.3

Bumps [braces](https://github.com/micromatch/braces) from 3.0.2 to 3.0.3.
- [Changelog](https://github.com/micromatch/braces/blob/master/CHANGELOG.md)
- [Commits](https://github.com/micromatch/braces/compare/3.0.2...3.0.3)

---
updated-dependencies:
- dependency-name: braces
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
---
 package-lock.json | 135 ++++++++++++++++------------------------------
 1 file changed, 47 insertions(+), 88 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index f123990b..2be68b58 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
     "name": "openseadragon",
-    "version": "4.1.0",
+    "version": "4.1.1",
     "lockfileVersion": 3,
     "requires": true,
     "packages": {
         "": {
             "name": "openseadragon",
-            "version": "4.1.0",
+            "version": "4.1.1",
             "license": "BSD-3-Clause",
             "devDependencies": {
                 "eslint-plugin-compat": "^4.1.2",
@@ -571,6 +571,18 @@
                 "concat-map": "0.0.1"
             }
         },
+        "node_modules/braces": {
+            "version": "3.0.3",
+            "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.3.tgz",
+            "integrity": "sha512-yQbXgO/OSZVD2IsiLlro+7Hf6Q18EJrKSEsdoMzKePKXct3gvD8oLcOQdIzGupr5Fj+EDe8gO/lxc1BzfMpxvA==",
+            "dev": true,
+            "dependencies": {
+                "fill-range": "^7.1.1"
+            },
+            "engines": {
+                "node": ">=8"
+            }
+        },
         "node_modules/browserslist": {
             "version": "4.21.5",
             "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.21.5.tgz",
@@ -1735,6 +1747,18 @@
                 "node": "^10.12.0 || >=12.0.0"
             }
         },
+        "node_modules/fill-range": {
+            "version": "7.1.1",
+            "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.1.1.tgz",
+            "integrity": "sha512-YsGpe3WHLK8ZYi4tWDg2Jy3ebRz2rXowDxnld4bkQB00cc/1Zw9AWnC0i9ztDJitivtQvaI9KaLyKrc+hBW0yg==",
+            "dev": true,
+            "dependencies": {
+                "to-regex-range": "^5.0.1"
+            },
+            "engines": {
+                "node": ">=8"
+            }
+        },
         "node_modules/finalhandler": {
             "version": "1.1.2",
             "dev": true,
@@ -1767,39 +1791,6 @@
                 "node": ">= 10.13.0"
             }
         },
-        "node_modules/findup-sync/node_modules/braces": {
-            "version": "3.0.2",
-            "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.2.tgz",
-            "integrity": "sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==",
-            "dev": true,
-            "dependencies": {
-                "fill-range": "^7.0.1"
-            },
-            "engines": {
-                "node": ">=8"
-            }
-        },
-        "node_modules/findup-sync/node_modules/fill-range": {
-            "version": "7.0.1",
-            "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.0.1.tgz",
-            "integrity": "sha512-qOo9F+dMUmC2Lcb4BbVvnKJxTPjCm+RRpe4gDuGrzkL7mEVl/djYSu2OdQ2Pa302N4oqkSg9ir6jaLWJ2USVpQ==",
-            "dev": true,
-            "dependencies": {
-                "to-regex-range": "^5.0.1"
-            },
-            "engines": {
-                "node": ">=8"
-            }
-        },
-        "node_modules/findup-sync/node_modules/is-number": {
-            "version": "7.0.0",
-            "resolved": "https://registry.npmjs.org/is-number/-/is-number-7.0.0.tgz",
-            "integrity": "sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==",
-            "dev": true,
-            "engines": {
-                "node": ">=0.12.0"
-            }
-        },
         "node_modules/findup-sync/node_modules/micromatch": {
             "version": "4.0.5",
             "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-4.0.5.tgz",
@@ -1813,18 +1804,6 @@
                 "node": ">=8.6"
             }
         },
-        "node_modules/findup-sync/node_modules/to-regex-range": {
-            "version": "5.0.1",
-            "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
-            "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
-            "dev": true,
-            "dependencies": {
-                "is-number": "^7.0.0"
-            },
-            "engines": {
-                "node": ">=8.0"
-            }
-        },
         "node_modules/fined": {
             "version": "1.2.0",
             "dev": true,
@@ -3097,6 +3076,15 @@
                 "node": ">=0.10.0"
             }
         },
+        "node_modules/is-number": {
+            "version": "7.0.0",
+            "resolved": "https://registry.npmjs.org/is-number/-/is-number-7.0.0.tgz",
+            "integrity": "sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==",
+            "dev": true,
+            "engines": {
+                "node": ">=0.12.0"
+            }
+        },
         "node_modules/is-number-like": {
             "version": "1.0.8",
             "dev": true,
@@ -3348,28 +3336,6 @@
                 "node": ">=10"
             }
         },
-        "node_modules/liftup/node_modules/braces": {
-            "version": "3.0.2",
-            "dev": true,
-            "license": "MIT",
-            "dependencies": {
-                "fill-range": "^7.0.1"
-            },
-            "engines": {
-                "node": ">=8"
-            }
-        },
-        "node_modules/liftup/node_modules/fill-range": {
-            "version": "7.0.1",
-            "dev": true,
-            "license": "MIT",
-            "dependencies": {
-                "to-regex-range": "^5.0.1"
-            },
-            "engines": {
-                "node": ">=8"
-            }
-        },
         "node_modules/liftup/node_modules/findup-sync": {
             "version": "4.0.0",
             "dev": true,
@@ -3384,14 +3350,6 @@
                 "node": ">= 8"
             }
         },
-        "node_modules/liftup/node_modules/is-number": {
-            "version": "7.0.0",
-            "dev": true,
-            "license": "MIT",
-            "engines": {
-                "node": ">=0.12.0"
-            }
-        },
         "node_modules/liftup/node_modules/micromatch": {
             "version": "4.0.5",
             "dev": true,
@@ -3404,17 +3362,6 @@
                 "node": ">=8.6"
             }
         },
-        "node_modules/liftup/node_modules/to-regex-range": {
-            "version": "5.0.1",
-            "dev": true,
-            "license": "MIT",
-            "dependencies": {
-                "is-number": "^7.0.0"
-            },
-            "engines": {
-                "node": ">=8.0"
-            }
-        },
         "node_modules/lines-and-columns": {
             "version": "1.2.4",
             "resolved": "https://registry.npmjs.org/lines-and-columns/-/lines-and-columns-1.2.4.tgz",
@@ -4765,6 +4712,18 @@
             "dev": true,
             "license": "MIT"
         },
+        "node_modules/to-regex-range": {
+            "version": "5.0.1",
+            "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
+            "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
+            "dev": true,
+            "dependencies": {
+                "is-number": "^7.0.0"
+            },
+            "engines": {
+                "node": ">=8.0"
+            }
+        },
         "node_modules/toidentifier": {
             "version": "1.0.1",
             "dev": true,

From 2290e5d08de7e4ebdae74719ba08d12364d7e340 Mon Sep 17 00:00:00 2001
From: Mark Salsbery <msalsbery@hotmail.com>
Date: Sun, 23 Jun 2024 16:32:00 -0700
Subject: [PATCH 7/8] More dropped support for IE11

---
 package-lock.json                 | 17 ++++++----
 package.json                      |  2 +-
 src/button.js                     |  7 ----
 src/control.js                    |  6 +---
 src/mousetracker.js               | 26 +++++----------
 src/navigator.js                  |  1 -
 src/openseadragon.js              | 54 +++++++------------------------
 src/referencestrip.js             |  1 -
 test/helpers/legacy.mouse.shim.js |  2 +-
 9 files changed, 33 insertions(+), 83 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index f123990b..ac650b70 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
     "name": "openseadragon",
-    "version": "4.1.0",
+    "version": "4.1.1",
     "lockfileVersion": 3,
     "requires": true,
     "packages": {
         "": {
             "name": "openseadragon",
-            "version": "4.1.0",
+            "version": "4.1.1",
             "license": "BSD-3-Clause",
             "devDependencies": {
                 "eslint-plugin-compat": "^4.1.2",
@@ -656,9 +656,9 @@
             }
         },
         "node_modules/caniuse-lite": {
-            "version": "1.0.30001456",
-            "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001456.tgz",
-            "integrity": "sha512-XFHJY5dUgmpMV25UqaD4kVq2LsiaU5rS8fb0f17pCoXQiQslzmFgnfOxfvo1bTpTqf7dwG/N/05CnLCnOEKmzA==",
+            "version": "1.0.30001636",
+            "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001636.tgz",
+            "integrity": "sha512-bMg2vmr8XBsbL6Lr0UHXy/21m84FTxDLWn2FSqMd5PrlbMxwJlQnC2YWYxVgp66PZE+BBNF2jYQUBKCo1FDeZg==",
             "dev": true,
             "funding": [
                 {
@@ -668,8 +668,13 @@
                 {
                     "type": "tidelift",
                     "url": "https://tidelift.com/funding/github/npm/caniuse-lite"
+                },
+                {
+                    "type": "github",
+                    "url": "https://github.com/sponsors/ai"
                 }
-            ]
+            ],
+            "license": "CC-BY-4.0"
         },
         "node_modules/chalk": {
             "version": "2.4.2",
diff --git a/package.json b/package.json
index 7654a199..86dbe53b 100644
--- a/package.json
+++ b/package.json
@@ -48,4 +48,4 @@
         "test": "grunt test",
         "prepare": "grunt build"
     }
-}
\ No newline at end of file
+}
diff --git a/src/button.js b/src/button.js
index 34d1f27a..aeb9df92 100644
--- a/src/button.js
+++ b/src/button.js
@@ -167,13 +167,6 @@ $.Button = function( options ) {
         this.imgDown.style.visibility  =
             "hidden";
 
-        if ($.Browser.vendor === $.BROWSERS.FIREFOX && $.Browser.version < 3) {
-            this.imgGroup.style.top =
-            this.imgHover.style.top =
-            this.imgDown.style.top  =
-                "";
-        }
-
         this.element.appendChild( this.imgRest );
         this.element.appendChild( this.imgGroup );
         this.element.appendChild( this.imgHover );
diff --git a/src/control.js b/src/control.js
index 51fe020a..0a8b7ca6 100644
--- a/src/control.js
+++ b/src/control.js
@@ -194,11 +194,7 @@ $.Control.prototype = {
      * @param {Number} opactiy - a value between 1 and 0 inclusively.
      */
     setOpacity: function( opacity ) {
-        if ( this.element[ $.SIGNAL ] && $.Browser.vendor === $.BROWSERS.IE ) {
-            $.setElementOpacity( this.element, opacity, true );
-        } else {
-            $.setElementOpacity( this.wrapper, opacity, true );
-        }
+        $.setElementOpacity( this.wrapper, opacity, true );
     }
 };
 
diff --git a/src/mousetracker.js b/src/mousetracker.js
index 2a0b6a3c..e56cb609 100644
--- a/src/mousetracker.js
+++ b/src/mousetracker.js
@@ -1116,10 +1116,9 @@
     /**
      * Detect available mouse wheel event name.
      */
-    $.MouseTracker.wheelEventName = ( $.Browser.vendor === $.BROWSERS.IE && $.Browser.version > 8 ) ||
-                                                ( 'onwheel' in document.createElement( 'div' ) ) ? 'wheel' : // Modern browsers support 'wheel'
-                                    document.onmousewheel !== undefined ? 'mousewheel' :                     // Webkit and IE support at least 'mousewheel'
-                                    'DOMMouseScroll';                                                        // Assume old Firefox
+    $.MouseTracker.wheelEventName = ( 'onwheel' in document.createElement( 'div' ) ) ? 'wheel' : // Modern browsers support 'wheel'
+                                    document.onmousewheel !== undefined ? 'mousewheel' :         // Webkit (and unsupported IE) support at least 'mousewheel'
+                                    'DOMMouseScroll';                                            // Assume old Firefox (deprecated)
 
     /**
      * Detect browser pointer device event model(s) and build appropriate list of events to subscribe to.
@@ -1132,7 +1131,7 @@
     }
 
     if ( window.PointerEvent ) {
-        // IE11 and other W3C Pointer Event implementations (see http://www.w3.org/TR/pointerevents)
+        // W3C Pointer Event implementations (see http://www.w3.org/TR/pointerevents)
         $.MouseTracker.havePointerEvents = true;
         $.MouseTracker.subscribeEvents.push( "pointerenter", "pointerleave", "pointerover", "pointerout", "pointerdown", "pointerup", "pointermove", "pointercancel" );
         // Pointer events capture support
@@ -1671,7 +1670,6 @@
 
     /**
      * Gets a W3C Pointer Events model compatible pointer type string from a DOM pointer event.
-     * IE10 used a long integer value, but the W3C specification (and IE11+) use a string "mouse", "touch", "pen", etc.
      *
      * Note: Called for both pointer events and legacy mouse events
      *         ($.MouseTracker.havePointerEvents determines which)
@@ -1679,14 +1677,7 @@
      * @inner
      */
     function getPointerType( event ) {
-        if ( $.MouseTracker.havePointerEvents ) {
-            // Note: IE pointer events bug - sends invalid pointerType on lostpointercapture events
-            //    and possibly other events. We rely on sane, valid property values in DOM events, so for
-            //    IE, when the pointerType is missing, we'll default to 'mouse'...should be right most of the time
-            return event.pointerType || (( $.Browser.vendor === $.BROWSERS.IE ) ? 'mouse' : '');
-        } else {
-            return 'mouse';
-        }
+        return $.MouseTracker.havePointerEvents && event.pointerType ? event.pointerType : 'mouse';
     }
 
 
@@ -2554,15 +2545,14 @@
         };
 
         // Most browsers implicitly capture touch pointer events
-        // Note no IE versions have element.hasPointerCapture() so no implicit
-        //    pointer capture possible
+        // Note no IE versions (unsupported) have element.hasPointerCapture() so
+        //    no implicit pointer capture possible
         // var implicitlyCaptured = ($.MouseTracker.havePointerEvents &&
         //                         event.target.hasPointerCapture &&
         //                         $.Browser.vendor !== $.BROWSERS.IE) ?
         //                         event.target.hasPointerCapture(event.pointerId) : false;
         var implicitlyCaptured = $.MouseTracker.havePointerEvents &&
-                                gPoint.type === 'touch' &&
-                                $.Browser.vendor !== $.BROWSERS.IE;
+                                gPoint.type === 'touch';
 
         //$.console.log('pointerdown ' + (tracker.userData ? tracker.userData.toString() : '') + ' ' + (event.target === tracker.element ? 'tracker.element' : ''));
 
diff --git a/src/navigator.js b/src/navigator.js
index fb95e4b1..3329ed14 100644
--- a/src/navigator.js
+++ b/src/navigator.js
@@ -178,7 +178,6 @@ $.Navigator = function( options ){
         style['float']      = 'left'; //Webkit
 
         style.cssFloat      = 'left'; //Firefox
-        style.styleFloat    = 'left'; //IE
         style.zIndex        = 999999999;
         style.cursor        = 'default';
         style.boxSizing     = 'content-box';
diff --git a/src/openseadragon.js b/src/openseadragon.js
index 66036afa..499ab310 100644
--- a/src/openseadragon.js
+++ b/src/openseadragon.js
@@ -2343,43 +2343,18 @@ function OpenSeadragon( options ){
         /**
          * Create an XHR object
          * @private
-         * @param {type} [local] If set to true, the XHR will be file: protocol
-         * compatible if possible (but may raise a warning in the browser).
+         * @param {type} [local] Deprecated. Ignored (IE/ActiveXObject file protocol no longer supported).
          * @returns {XMLHttpRequest}
          */
-        createAjaxRequest: function( local ) {
-            // IE11 does not support window.ActiveXObject so we just try to
-            // create one to see if it is supported.
-            // See: http://msdn.microsoft.com/en-us/library/ie/dn423948%28v=vs.85%29.aspx
-            var supportActiveX;
-            try {
-                /* global ActiveXObject:true */
-                supportActiveX = !!new ActiveXObject( "Microsoft.XMLHTTP" );
-            } catch( e ) {
-                supportActiveX = false;
-            }
-
-            if ( supportActiveX ) {
-                if ( window.XMLHttpRequest ) {
-                    $.createAjaxRequest = function( local ) {
-                        if ( local ) {
-                            return new ActiveXObject( "Microsoft.XMLHTTP" );
-                        }
-                        return new XMLHttpRequest();
-                    };
-                } else {
-                    $.createAjaxRequest = function() {
-                        return new ActiveXObject( "Microsoft.XMLHTTP" );
-                    };
-                }
-            } else if ( window.XMLHttpRequest ) {
+        createAjaxRequest: function() {
+            if ( window.XMLHttpRequest ) {
                 $.createAjaxRequest = function() {
                     return new XMLHttpRequest();
                 };
+                return new XMLHttpRequest();
             } else {
                 throw new Error( "Browser doesn't support XMLHttpRequest." );
             }
-            return $.createAjaxRequest( local );
         },
 
         /**
@@ -2415,7 +2390,7 @@ function OpenSeadragon( options ){
             }
 
             var protocol = $.getUrlProtocol( url );
-            var request = $.createAjaxRequest( protocol === "file:" );
+            var request = $.createAjaxRequest();
 
             if ( !$.isFunction( onSuccess ) ) {
                 throw new Error( "makeAjaxRequest requires a success callback" );
@@ -2584,17 +2559,6 @@ function OpenSeadragon( options ){
                     return xmlDoc;
                 };
 
-            } else if ( window.ActiveXObject ) {
-
-                $.parseXml = function( string ) {
-                    var xmlDoc = null;
-
-                    xmlDoc = new ActiveXObject( "Microsoft.XMLDOM" );
-                    xmlDoc.async = false;
-                    xmlDoc.loadXML( string );
-                    return xmlDoc;
-                };
-
             } else {
                 throw new Error( "Browser doesn't support XML DOM." );
             }
@@ -2719,6 +2683,10 @@ function OpenSeadragon( options ){
         //console.error( 'appVersion: ' + navigator.appVersion );
         //console.error( 'userAgent: ' + navigator.userAgent );
 
+        //TODO navigator.appName is deprecated. Should be 'Netscape' for all browsers
+        //  but could be dropped at any time
+        //  See https://developer.mozilla.org/en-US/docs/Web/API/Navigator/appName
+        //      https://developer.mozilla.org/en-US/docs/Web/HTTP/Browser_detection_using_the_user_agent
         switch( navigator.appName ){
             case "Microsoft Internet Explorer":
                 if( !!window.attachEvent &&
@@ -2804,8 +2772,8 @@ function OpenSeadragon( options ){
         //determine if this browser supports element.style.opacity
         $.Browser.opacity = true;
 
-        if ( $.Browser.vendor === $.BROWSERS.IE && $.Browser.version < 11 ) {
-            $.console.error('Internet Explorer versions < 11 are not supported by OpenSeadragon');
+        if ( $.Browser.vendor === $.BROWSERS.IE ) {
+            $.console.error('Internet Explorer is not supported by OpenSeadragon');
         }
     })();
 
diff --git a/src/referencestrip.js b/src/referencestrip.js
index 1f9bb35b..61bad43b 100644
--- a/src/referencestrip.js
+++ b/src/referencestrip.js
@@ -193,7 +193,6 @@ $.ReferenceStrip = function ( options ) {
         element.style.display       = 'inline';
         element.style['float']      = 'left'; //Webkit
         element.style.cssFloat      = 'left'; //Firefox
-        element.style.styleFloat    = 'left'; //IE
         element.style.padding       = '2px';
         $.setElementTouchActionNone( element );
         $.setElementPointerEventsNone( element );
diff --git a/test/helpers/legacy.mouse.shim.js b/test/helpers/legacy.mouse.shim.js
index 19374147..938e8695 100644
--- a/test/helpers/legacy.mouse.shim.js
+++ b/test/helpers/legacy.mouse.shim.js
@@ -1,4 +1,4 @@
-(function($, undefined) {
+(function($) {
 
     /**
      * Plugin to force OpenSeadragon to use the legacy mouse pointer event model

From fc7b942bc2b39173c98c9ed64c76189f289fc838 Mon Sep 17 00:00:00 2001
From: Mark Salsbery <msalsbery@hotmail.com>
Date: Sun, 23 Jun 2024 16:35:22 -0700
Subject: [PATCH 8/8] Update changelog.txt

---
 changelog.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/changelog.txt b/changelog.txt
index c9afb51d..07ad1612 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -3,7 +3,7 @@ OPENSEADRAGON CHANGELOG
 
 5.0.0: (in progress...)
 
-* BREAKING CHANGE: Dropped support for IE11 (#2300, #2361 @AndrewADev)
+* BREAKING CHANGE: Dropped support for IE11 (#2300, #2361, #2553 @AndrewADev, @msalsbery)
 * DEPRECATION: The OpenSeadragon.createCallback function is no longer recommended (#2367 @akansjain)
 * The viewer now uses WebGL when available (#2310, #2462, #2466, #2468, #2469, #2472, #2478, #2488, #2492, #2521, #2537 @pearcetm, @Aiosa, @thec0keman)
 * Added webp to supported image formats (#2455 @BeebBenjamin)