diff -r 005d27918b57 -r f4608ad6c947 src/java/de/uapcore/lightpit/Functions.java
--- a/src/java/de/uapcore/lightpit/Functions.java	Sat Dec 23 17:28:19 2017 +0100
+++ b/src/java/de/uapcore/lightpit/Functions.java	Tue Dec 26 17:36:47 2017 +0100
@@ -29,6 +29,7 @@
 package de.uapcore.lightpit;
 
 import java.util.Optional;
+import javax.servlet.ServletContext;
 import javax.servlet.http.HttpServletRequest;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -40,8 +41,24 @@
     
     private static final Logger LOG = LoggerFactory.getLogger(Functions.class);
 
+    public static Optional<String[]> availableLanguages(ServletContext ctx) {
+        return Optional.ofNullable(ctx.getInitParameter(Constants.CTX_ATTR_LANGUAGES)).map((x) -> x.split("\\s*,\\s*"));
+    }
+    
+    public static String enforceExt(String filename, String ext) {
+        return filename.endsWith(ext) ? filename : filename + ext;
+    }
+
     public static String jspPath(String filename) {
-        return Constants.JSP_PATH_PREFIX + filename;
+        return enforceExt(Constants.JSP_PATH_PREFIX + filename, ".jsp");
+    }
+    
+    public static String jspfPath(String filename) {
+        return enforceExt(Constants.JSPF_PATH_PREFIX + filename, ".jspf");
+    }
+    
+    public static String dynFragmentPath(String filename) {
+        return enforceExt(Constants.DYN_FRAGMENT_PATH_PREFIX + filename, ".jsp");
     }
     
     public static String fqn(String base, String name) {