For nodecontrol_list, if showtype=<DB-node-type> then show only nodes of

that type (e.g., pc3000).

Link this capability from shownodetype with a "show details" link down
where all the dots are shown.

www/nodecontrol_list.php3

@@ -130,6 +130,11 @@ elseif (! strcmp($showtype, "wireless")) {
 
     $view   = "Wireless";
 }
+elseif (preg_match("/^[-\w]+$/", $showtype)) {
+    $role   = "(role='testnode')";
+    $clause = "and (nt.type='$showtype')";
+    $view   = "only <a href=shownodetype.php3?node_type=$showtype>$showtype</a>";
+}
 else {
     $role   = "(role='testnode')";
     $clause = "and (nt.class='pc')";

www/shownodetype.php3

@@ -116,6 +116,8 @@ $query_result =
 if (mysql_num_rows($query_result)) {
     echo "<br>
           <center>
+	  Nodes (<a href=nodecontrol_list.php3?showtype=$node_type>Show details</a>)
+	  <br>
           <table class=nogrid cellspacing=0 border=0 cellpadding=5>\n";
 
     $maxcolumns = 4;