diff --git a/dialog.js b/dialog.js
index 8dccf65..3b6a730 100644
--- a/dialog.js
+++ b/dialog.js
@@ -32,22 +32,6 @@ angular.module('ayDialog', [])
 
     var kZIndexMax = Math.pow(2, 31) - 1;
 
-    // Courtesy of AngularUI Bootstrap's $modal service
-    var FOCUS_SELECTOR = [
-        'a[href]',
-        'area[href]',
-        'input:not([disabled])',
-        'button:not([disabled])',
-        'select:not([disabled])',
-        'textarea:not([disabled])',
-        'keygen:not([disabled])',
-        'iframe',
-        'object',
-        'embed',
-        '[tabindex]:not([disabled]):not([tabindex=""])',
-        '[contenteditable=true]'
-    ].join(',');
-
 
     var DIALOG_STYLES = [
         '[hidden] {',
@@ -75,6 +59,10 @@ angular.module('ayDialog', [])
         '    -webkit-overflow-scrolling: touch;',
         '}',
         '',
+        'dialog:focus {',
+        '    outline: 0 none;',
+        '}',
+        '',
         'dialog[open] {',
         '    visibility: visible;',
         '}',
@@ -124,21 +112,6 @@ angular.module('ayDialog', [])
             return;
         }
 
-        var control = el.querySelector(FOCUS_SELECTOR);
-
-        if (control) {
-            if (immediate) {
-                control.focus();
-                return;
-            }
-
-            $window.setTimeout(function() {
-                control.focus();
-            }, 1);
-            el.focus();
-            return;
-        }
-
         el.focus();
     }
 
@@ -312,6 +285,11 @@ angular.module('ayDialog', [])
                 el.setAttribute('role', 'dialog');
             }
 
+            // Ensure the dialog is focusable
+            if (!el.hasAttribute('tabindex')) {
+                el.tabIndex = -1;
+            }
+
 
             if (('HTMLDialogElement' in $window) &&
                 (el instanceof $window.HTMLDialogElement))