diff --git a/widgets/navigator/skins/horiNavigator/js/navigator.js b/widgets/navigator/skins/horiNavigator/js/navigator.js
index 11e6da542..b6a0abc39 100755
--- a/widgets/navigator/skins/horiNavigator/js/navigator.js
+++ b/widgets/navigator/skins/horiNavigator/js/navigator.js
@@ -50,6 +50,7 @@ WidgetNavigator.prototype.drawMenu = function(parent_srl){
     var h = jQuery('<ul class="widgetNavSub '+hrMenuColorset+'" node_srl="'+parent_srl+'">')
 
             .css({ position:'absolute' })
+            .css({ zIndex:9999 })
 
             .mouseover(function(){
 
@@ -147,4 +148,4 @@ WidgetNavigator.prototype.getMenu = function(parent_srl){
 WidgetNavigator.prototype.getDepth = function(node_srl){
     var m = this.data.find('span[node_srl='+node_srl+']');
     return m.parents("span").size();
-}
\ No newline at end of file
+}