prepare for nearest implementation

Utils/UiUtils.js

@@ -220,4 +220,9 @@
             e[i].addEventListener(event, callback);
         }
     };
+
+    jsOMS.nearest = function (e, selector)
+    {
+
+    };
 }(window.jsOMS = window.jsOMS || {}));

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 || {}));