diff --git a/library/Businessprocess/Node.php b/library/Businessprocess/Node.php
index 36de014..6458db8 100644
--- a/library/Businessprocess/Node.php
+++ b/library/Businessprocess/Node.php
@@ -267,11 +267,25 @@ abstract class Node
         $state = strtolower($this->getStateName());
         if ($this->isMissing()) $state = 'missing';
         $handled = $this->isAcknowledged() || $this->isInDowntime();
+        if ($this instanceof BpNode) {
+            $typeClass = 'process';
+        } elseif ($this instanceof HostNode) {
+            $typeClass = 'host';
+        } elseif ($this instanceof ServiceNode) {
+            $typeClass = 'service';
+        } elseif ($this instanceof ImportedNode) {
+            $typeClass = 'subtree';
+        } else {
+            // WTF?
+            var_dump($this); exit;
+        }
+
         $html = sprintf(
-            '<table class="bp %s%s%s" id="%s"><tbody><tr>',
+            '<table class="bp %s%s%s%s" id="%s"><tbody><tr>',
             $state === 'ok' ? 'ok' : 'problem ' . $state,
             $handled ? ' handled' : '',
-            $this->hasChildren() ? ' operator process' : ' node service',
+            ($this->hasChildren() ? ' operator ' : ' node '),
+            $typeClass,
             $id
         );