diff --git a/css/main.css b/css/main.css
index d715bf8b637635551dcac1e87ef924a50c65b32a..b878da648a1b49055cf64cffa2e18d0ee8eef2bd 100644
--- a/css/main.css
+++ b/css/main.css
@@ -20,7 +20,7 @@ pre {
 
 .navbar {
     margin-bottom:0;
-    z-index: 2;
+    z-index: 5;
     border-radius: 0;
     opacity:0.8;
 }
diff --git a/js/cam/assemblers/AssemblerPost.js b/js/cam/assemblers/AssemblerPost.js
index ea95ebb58d5ae12df38f7138438acbc555fdc214..2c007a6f0c673da7d7e250c4e4a37740a9d31858 100644
--- a/js/cam/assemblers/AssemblerPost.js
+++ b/js/cam/assemblers/AssemblerPost.js
@@ -61,7 +61,7 @@ define(['underscore', 'appState', 'lattice', 'cam'], function(_, appState, latti
         this.customChangeZLayer = function(currentIndex, lastIndex, exporter, settings, context, self){
     var data = "";
     if (lastIndex === null || (currentIndex.z-lastIndex.z)%2 != 0){
-        data += exporter.addLine("G0", ["A" + ((currentIndex.z%2+1)*0.3125).toFixed(4)], "new layer");
+        data += exporter.addLine("G0", ["A" + ((currentIndex.z+1)%2*0.3125).toFixed(4)], "new layer");
         data += "\n";
     }
     return data;