diff --git a/navalplanner-webapp/src/main/webapp/planner/css/ganttzk.css b/navalplanner-webapp/src/main/webapp/planner/css/ganttzk.css
index e7b69e34d..7ed4ba0c9 100644
--- a/navalplanner-webapp/src/main/webapp/planner/css/ganttzk.css
+++ b/navalplanner-webapp/src/main/webapp/planner/css/ganttzk.css
@@ -187,7 +187,7 @@
     text-align: center;
     vertical-align: middle;
     cursor: pointer;
-    z-index : 99;
+    z-index : 99 !important;
 }
 
 /* Task lane properties */
@@ -922,11 +922,6 @@ height: 100%
     padding: 1px 4px;
 }
 
-
-.yui-resize {
-    z-index: auto !important;
-}
-
 .advancedallocationlayout .name {
     min-width:200px;
 }