diff --git a/ganttzk/src/main/resources/web/js/ganttz/tasklist.js b/ganttzk/src/main/resources/web/js/ganttz/tasklist.js
index c6eea5f85..337d3d350 100644
--- a/ganttzk/src/main/resources/web/js/ganttz/tasklist.js
+++ b/ganttzk/src/main/resources/web/js/ganttz/tasklist.js
@@ -450,7 +450,7 @@ zkTask.isOverTask = function(cmp, arrow) {
 
 	var xpos = zkTask.xMouse - findPosX(innerLayout)
 			+ innerLayout.scrollLeft;
-	var ypos = zkTask.yMouse - findPosY(innerLayout) - 48 /* padding top */
+	var ypos = zkTask.yMouse - findPosY(innerLayout)
 			+ innerLayout.scrollTop - listtasksNode.offsetTop;
 
 	for ( var i = 0; i < arrayTasks.length; i++) {
diff --git a/navalplanner-webapp/src/main/webapp/planner/css/ganttzk.css b/navalplanner-webapp/src/main/webapp/planner/css/ganttzk.css
index 8c5071234..73f5857f5 100644
--- a/navalplanner-webapp/src/main/webapp/planner/css/ganttzk.css
+++ b/navalplanner-webapp/src/main/webapp/planner/css/ganttzk.css
@@ -144,7 +144,7 @@ min-width:200px;
     position: absolute;
     padding: 4px;
     cursor: crosshair;
-    z-index:-1;
+    z-index:0;
 }
 
 .end,.start {