diff --git a/Utils/UiUtils.js b/Utils/UiUtils.js
index a50dc84..3147433 100644
--- a/Utils/UiUtils.js
+++ b/Utils/UiUtils.js
@@ -220,4 +220,9 @@
             e[i].addEventListener(event, callback);
         }
     };
+
+    jsOMS.nearest = function (e, selector)
+    {
+
+    };
 }(window.jsOMS = window.jsOMS || {}));
diff --git a/Utils/oLib.js b/Utils/oLib.js
index 9c747ae..385eaf1 100644
--- a/Utils/oLib.js
+++ b/Utils/oLib.js
@@ -489,4 +489,10 @@
 
         return text.replace(/[&<>"']/g, function(m) { return map[m]; });
     };
+
+    jsOMS.nearest = function (e, selector) {
+        // same level first
+        // parent level second
+        // child level third
+    };
 }(window.jsOMS = window.jsOMS || {}));