diff --git a/superx/xml/js/viz/viz_functions.js b/superx/xml/js/viz/viz_functions.js
index 39b6a5b..d6de5aa 100644
--- a/superx/xml/js/viz/viz_functions.js
+++ b/superx/xml/js/viz/viz_functions.js
@@ -352,7 +352,7 @@ function renderChart(chartDiv,currentChartModel)
 		}
 	}
 	else
-		document.getElementById(chartDiv).innerHTML="";
+		document.getElementById(chartDiv).innerHTML="<svg viewBox=\"0 0 650 450\"><rect x=\"0\" y=\"0\" width=\"650\" height=\"450\" fill=\"#cccccc\"></rect></svg>";
 
 }
 
diff --git a/superx/xml/viz_html_chart.xsl b/superx/xml/viz_html_chart.xsl
index 6b286d1..9585bde 100644
--- a/superx/xml/viz_html_chart.xsl
+++ b/superx/xml/viz_html_chart.xsl
@@ -1246,7 +1246,7 @@ var platform='superx';
 	   	<a onclick="showVizNavTab(1);"><span>Diagramm-Daten</span></a>
 	    </li>
 	    <li data-target="viznav-tab2" id="2">
-		<a onclick="showVizNavTab(2);"><span>Diagramm-Layout</span></a>
+		<a onclick="updateChartModel();renderChart('chartDiv',myChartModel);showVizNavTab(2);"><span>Diagramm-Layout</span></a>
 	    </li>
 	    <li data-target="viznav-tab3" id="3">
 		<a onclick="showVizNavTab(3);"><span>Diagramm-Nutzung</span></a>
@@ -1770,7 +1770,7 @@ rs[</xsl:text><xsl:value-of select="$tableId"/><xsl:text>].push(new dataRow_</xs
     <p class="bd-notification is-primary">
       Diagramm
     </p>
-    <p><span class="button is-link is-outlined is-small" onClick="updateChartModel();renderChart('chartDiv',myChartModel);">Erzeugen</span></p>
+    <!--<p><span class="button is-link is-outlined is-small" onClick="updateChartModel();renderChart('chartDiv',myChartModel);">Erzeugen</span></p>-->
   </div>
   <div class="column is-half">
   <div class="field is-grouped">
@@ -1870,12 +1870,10 @@ rs[</xsl:text><xsl:value-of select="$tableId"/><xsl:text>].push(new dataRow_</xs
    <div class="column">
     <p class="bd-notification is-fojeisj">Vorschau</p>
     <div id="chartCanvas"> 
-	<div id="chartDiv"><svg viewBox="0 0 650 450">
-  
-
-    <rect x="0" y="0" width="650" height="450" fill="#cccccc"></rect>
-  
-</svg></div>
+	<div id="chartDiv">
+  <svg viewBox="0 0 650 450">
+  <rect x="0" y="0" width="650" height="450" fill="#cccccc"></rect>
+  </svg></div>
 	
 </div>
   </div>