Better fix for IE9 issue with document.activeElement error (#1489008)

program/js/app.js

@@ -178,6 +178,11 @@ function rcube_webmail()
       parent.rcmail.env.frame_lock = null;
     }
 
+    // Makes that reference to document.activeElement do not throw
+    // "unspecified error" in IE9 (#1489008)
+    if (this.env.framed && bw.ie)
+      document.documentElement.focus();
+
     // enable general commands
     this.enable_command('close', 'logout', 'mail', 'addressbook', 'settings', 'save-pref',
       'compose', 'undo', 'about', 'switch-task', 'menu-open', 'menu-save', true);

program/js/common.js

@@ -743,12 +743,8 @@ jQuery.fn.placeholder = function(text) {
       });
 
       // Do not blur currently focused element
-      // Catch "unspecified error" in IE9 (#1489008)
-      try {
-        if (this != document.activeElement)
-          elem.blur();
-      }
-      catch(e) {}
+      if (this != document.activeElement)
+        elem.blur();
     }
   });
 };