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diff --git a/src/main/java/de/juplo/thymeleaf/ActiveAttrProcessor.java b/src/main/java/de/juplo/thymeleaf/ActiveAttrProcessor.java
new file mode 100644
index 0000000..7dbe0cd
--- /dev/null
+++ b/src/main/java/de/juplo/thymeleaf/ActiveAttrProcessor.java
@@ -0,0 +1,81 @@
+package de.juplo.thymeleaf;
+
+
+import org.thymeleaf.Arguments;
+import org.thymeleaf.Configuration;
+import org.thymeleaf.dom.Element;
+import org.thymeleaf.processor.ProcessorResult;
+import org.thymeleaf.processor.attr.AbstractAttrProcessor;
+import org.thymeleaf.standard.expression.IStandardExpression;
+import org.thymeleaf.standard.expression.IStandardExpressionParser;
+import org.thymeleaf.standard.expression.StandardExpressions;
+
+
+/**
+ * Replaces the element by the tag <code>&lt;strong&gt;</code>, if it is
+ * marked as active.
+ * @author Kai Moritz
+ */
+public class ActiveAttrProcessor extends AbstractAttrProcessor
+{
+  public static final int ATTR_PRECEDENCE = 100;
+
+
+  public ActiveAttrProcessor()
+  {
+    super("active");
+  }
+
+
+  @Override
+  protected ProcessorResult processAttribute(
+      Arguments arguments,
+      Element element,
+      String name
+      )
+  {
+    Configuration configuration = arguments.getConfiguration();
+    IStandardExpressionParser parser =
+        StandardExpressions.getExpressionParser(configuration);
+    String value = element.getAttributeValue(name);
+    IStandardExpression expression =
+        parser.parseExpression(configuration, arguments, value);
+    element.removeAttribute(name);
+    if ((Boolean)expression.execute(configuration, arguments))
+    {
+      // We must not clone the processors, because we remove attributes
+      Element strong =
+          element.cloneElementNodeWithNewName(element, "strong", false);
+      strong.removeAttribute("charset");
+      strong.removeAttribute("th:charset");
+      strong.removeAttribute("coords");
+      strong.removeAttribute("href");
+      strong.removeAttribute("th:href");
+      strong.removeAttribute("hreflang");
+      strong.removeAttribute("th:hreflang");
+      strong.removeAttribute("media");
+      strong.removeAttribute("th:media");
+      strong.removeAttribute("name");
+      strong.removeAttribute("th:name");
+      strong.removeAttribute("rel");
+      strong.removeAttribute("th:rel");
+      strong.removeAttribute("ref");
+      strong.removeAttribute("th:ref");
+      strong.removeAttribute("shape");
+      strong.removeAttribute("target");
+      strong.removeAttribute("th:target");
+      strong.removeAttribute("type");
+      strong.removeAttribute("th:type");
+      element.clearChildren();
+      element.addChild(strong);
+      element.getParent().extractChild(element);
+    }
+    return ProcessorResult.OK;
+  }
+
+  @Override
+  public int getPrecedence()
+  {
+    return ATTR_PRECEDENCE;
+  }
+}