diff --git a/website/o3dv/js/navigator.js b/website/o3dv/js/navigator.js
index 97dd327..e1e540a 100644
--- a/website/o3dv/js/navigator.js
+++ b/website/o3dv/js/navigator.js
@@ -119,23 +119,8 @@ OV.Navigator = class
             }
         });
 
-        let originalWidth = null;
-        OV.CreateVerticalSplitter (this.splitterDiv, {
-            onSplitStart : () => {
-                originalWidth = this.mainDiv.outerWidth (true);
-            },
-            onSplit : (xDiff) => {
-                const minWidth = 280;
-                const maxWidth = 450;
-                let newWidth = originalWidth + xDiff;
-                if (newWidth < minWidth) {
-                    newWidth = minWidth;
-                } else if (newWidth > maxWidth)  {
-                    newWidth = maxWidth;
-                }
-                this.mainDiv.outerWidth (newWidth, true);
-                this.callbacks.onResize ();
-            }
+        OV.InstallVerticalSplitter (this.splitterDiv, this.mainDiv, false, () => {
+            this.callbacks.onResize ();
         });
     }
 
diff --git a/website/o3dv/js/sidebar.js b/website/o3dv/js/sidebar.js
index dda2798..deb5ca5 100644
--- a/website/o3dv/js/sidebar.js
+++ b/website/o3dv/js/sidebar.js
@@ -59,23 +59,8 @@ OV.Sidebar = class
             }
         );
 
-        let originalWidth = null;
-        OV.CreateVerticalSplitter (this.splitterDiv, {
-            onSplitStart : () => {
-                originalWidth = this.mainDiv.outerWidth (true);
-            },
-            onSplit : (xDiff) => {
-                const minWidth = 280;
-                const maxWidth = 450;
-                let newWidth = originalWidth - xDiff;
-                if (newWidth < minWidth) {
-                    newWidth = minWidth;
-                } else if (newWidth > maxWidth)  {
-                    newWidth = maxWidth;
-                }
-                this.mainDiv.outerWidth (newWidth, true);
-                this.callbacks.onResize ();
-            }
+        OV.InstallVerticalSplitter (this.splitterDiv, this.mainDiv, true, () => {
+            this.callbacks.onResize ();
         });
     }
 
diff --git a/website/o3dv/js/utils.js b/website/o3dv/js/utils.js
index e08e848..9001cb8 100644
--- a/website/o3dv/js/utils.js
+++ b/website/o3dv/js/utils.js
@@ -154,3 +154,30 @@ OV.CreateInlineColorCircle = function (color)
     let darkerColorHexString = '#' + OV.ColorToHexString (darkerColor);
     return $('<div>').addClass ('ov_color_circle').css ('background', hexString).css ('border', '1px solid ' + darkerColorHexString);
 };
+
+OV.InstallVerticalSplitter = function (splitterDiv, resizedDiv, flipped, onResize)
+{
+    let originalWidth = null;
+    OV.CreateVerticalSplitter (splitterDiv, {
+        onSplitStart : () => {
+            originalWidth = resizedDiv.outerWidth (true);
+        },
+        onSplit : (xDiff) => {
+            const minWidth = 280;
+            const maxWidth = 450;
+            let newWidth = 0;
+            if (flipped) {
+                newWidth = originalWidth - xDiff;
+            } else {
+                newWidth = originalWidth + xDiff;
+            }
+            if (newWidth < minWidth) {
+                newWidth = minWidth;
+            } else if (newWidth > maxWidth)  {
+                newWidth = maxWidth;
+            }
+            resizedDiv.outerWidth (newWidth, true);
+            onResize ();
+        }
+    });
+};