diff --git a/htroot/Crawler_p.html b/htroot/Crawler_p.html
index 29067ece7..dc96d9de5 100644
--- a/htroot/Crawler_p.html
+++ b/htroot/Crawler_p.html
@@ -218,37 +218,50 @@ window.setInterval("setTableSize()", 1000);
 <!-- crawl profile list -->
 #(crawlProfilesShow)#::
 <fieldset>
-<legend>Running Crawls (#[count]#)</legend>
-<table border="0" summary="A list of crawl profiles and their current settings.">
-  <colgroup>
-  <col width="16" />
-  <col width="140"/>
-  </colgroup>
-  <tr class="TableHeader">
-    <td><strong>Name</strong></td>
-    #(debug)#::<td><strong>Count</strong></td>#(/debug)#
-    <td><strong>Status</strong></td>
-  </tr>
-  #{list}# 
-  <tr class="TableCell#(dark)#Light::Dark#(/dark)#">
-    <td>#[name]#</td>
-    #(debug)#::<td>#[count]#</td>#(/debug)#
-    <td>#(terminateButton)#::
+    <legend>Running Crawls (#[count]#)</legend> 
+<table width="96%">
+<tr><td>
+  <table border="0" summary="A list of crawl profiles and their current settings.">
+    <colgroup>
+    <col width="16" />
+    <col width="140"/>
+    </colgroup>
+    <tr class="TableHeader">
+      <td><strong>Name</strong></td>
+      #(debug)#::<td><strong>Count</strong></td>#(/debug)#
+      <td><strong>Status</strong></td>
+    </tr>
+    #{list}# 
+    <tr class="TableCell#(dark)#Light::Dark#(/dark)#">
+      <td>#[name]#</td>
+      #(debug)#::<td>#[count]#</td>#(/debug)#
+      <td>#(terminateButton)#::
         <div style="text-decoration:blink;float:left;">Running</div>
         <form style="float:left;" action="Crawler_p.html" method="get" enctype="multipart/form-data" accept-charset="UTF-8"><div>
         <input type="hidden" name="handle" value="#[handle]#" />
         <input type="submit" name="terminate" value="Terminate" class="btn btn-danger btn-xs"/>
         </div></form>
         #(/terminateButton)#
-	</td>
-  </tr>
-  #{/list}# 
-</table>
-#(linkstructure)#::
+      </td>
+    </tr>
+    #{/list}# 
+  </table>
+</td>
+#(linkstructure)#
+<td>
+  <form style="float:right;" action="Crawler_p.html"><input type="submit" name="showwebstructuregraph" class="btn btn-default btn-xs" value="show link structure"/><form>
+</td></tr></table>
+::
+<td>
+  <form style="float:right;" action="Crawler_p.html"><input type="submit" name="hidewebstructuregraph" class="btn btn-default btn-xs" value="hide graphic"/><form>
+</td></tr></table>
 <script src="/js/d3.v3.min.js"></script>
 <script src="/js/hypertree.js"></script>
 <div id="linkstructure"></div>
 <script>$(document).ready(linkstructure("#[hosts]#", "#linkstructure", 1280, 720, 3000, 700));</script>::
+<td>
+  <form style="float:right;" action="Crawler_p.html"><input type="submit" name="hidewebstructuregraph" class="btn btn-default btn-xs" value="hide graphic"/><form>
+</td></tr></table>
 <script type="text/javascript">
     imagestub = "WebStructurePicture_p.png?host=#[hosts]#&depth=4&width=1024&height=512&nodes=600&time=1000&colortext=888888&colorback=FFFFFF&colordot0=1111BB&colordota=11BB11&colorline=222222&colorlineend=333333";
     idx = 0;
diff --git a/htroot/Crawler_p.java b/htroot/Crawler_p.java
index a50c4e989..58c0a830a 100644
--- a/htroot/Crawler_p.java
+++ b/htroot/Crawler_p.java
@@ -674,7 +674,11 @@ public class Crawler_p {
         prop.put("crawlProfilesShow", count == 0 ? 0 : 1);
 
         prop.put("crawlProfilesShow_linkstructure", 0);
-        
+
+        if (post != null) { // handle config button to display graphic
+            if (post.get("hidewebstructuregraph") != null) sb.setConfig(SwitchboardConstants.DECORATION_GRAFICS_LINKSTRUCTURE, false);
+            if (post.get("showwebstructuregraph") != null) sb.setConfig(SwitchboardConstants.DECORATION_GRAFICS_LINKSTRUCTURE, true);
+        }
         if (count > 0 && sb.getConfigBool(SwitchboardConstants.DECORATION_GRAFICS_LINKSTRUCTURE, true)) {
             // collect the host names for 'wide' crawls which can be visualized
             boolean showLinkstructure = hosts.length() > 0 && !hosts.contains("file:");
diff --git a/htroot/HostBrowser.html b/htroot/HostBrowser.html
index bb8f530a5..29ebb0c6d 100644
--- a/htroot/HostBrowser.html
+++ b/htroot/HostBrowser.html
@@ -181,7 +181,7 @@ function updatepage(str) {
       </table>
     </fieldset>
     
-    #(linkgraph)#::
+    #(linkgraph)#<div align="center"><form><input name="showlinkstructure" onClick="location.href = location.toString() + '&showlinkstructure=';" class="btn btn-default btn-xs" value="show link structure graph"/></form></div>::
     <script src="/js/d3.v3.min.js"></script>
     <script src="/js/hypertree.js"></script>
     <div id="linkstructure"></div>
diff --git a/htroot/HostBrowser.java b/htroot/HostBrowser.java
index e0241a89e..e7bd5f0c7 100644
--- a/htroot/HostBrowser.java
+++ b/htroot/HostBrowser.java
@@ -568,6 +568,9 @@ public class HostBrowser {
                 prop.put("files_subpathdetectedsize", filecounter - storedDocs.size());
                 prop.put("files", 1);
                 uri = new DigestURL(path);
+                if (post.containsKey("showlinkstructure")) {
+                    sb.setConfig(SwitchboardConstants.DECORATION_GRAFICS_LINKSTRUCTURE, true);
+                }
                 prop.put("files_linkgraph", uri.getPath().length() <= 1 && hostsize > 0 && sb.getConfigBool(SwitchboardConstants.DECORATION_GRAFICS_LINKSTRUCTURE, true));
                 prop.put("files_linkgraph_host", uri.getHost());