diff --git a/index.html b/index.html
index 32b1a50..cdb9894 100644
--- a/index.html
+++ b/index.html
@@ -21,6 +21,7 @@
 
     <div id="output"></div>
 
+    <script src="scripts/gcf.js"></script>
     <script src="scripts/haltestellen.js"></script>
 
 </body>
diff --git a/scripts/gcf.js b/scripts/gcf.js
new file mode 100644
index 0000000..c031d68
--- /dev/null
+++ b/scripts/gcf.js
@@ -0,0 +1,69 @@
+/**
+ * Created with JetBrains WebStorm.
+ * User: torsten
+ * Date: 28.03.13
+ * Time: 23:07
+ * To change this template use File | Settings | File Templates.
+ */
+
+gcf = {
+
+    // xmlhttp object function
+    getHTTPObject : function () {
+
+        // debug log
+        if (DEBUG === 1) {console.log("xml http object function");}
+
+        // variable definitions
+        var xhr;
+
+        // check for availibility if xmlhttprequest object
+        if(window.XMLHttpRequest) {
+            xhr = new XMLHttpRequest();
+        } else if(window.ActiveXObject) {
+            xhr = new ActiveXObject("Msxml2.XMLHTTP");
+        }
+
+        return xhr;
+
+    },
+
+
+    // ajax call function
+    ajaxCall : function (dataUrl, outputElement, callback, responseType) {
+
+        // debug log
+        if (DEBUG === 1) {console.log("ajax function");}
+
+        // variable definitions
+        var response,
+            request = this.getHTTPObject();  // get the xmlhttp object which is supported
+
+        outputElement.innerHTML = "Lade Daten ...";
+
+        request.onreadystatechange = function() {
+
+            if(request.readyState === 4 && request.status === 200) {
+
+                //save ajax response
+                if (responseType === "json") {
+                    response = JSON.parse(request.responseText);
+                } else if (responseType === "xml") {
+                    response = request.responseXML;
+                } else {
+                    response = request.responseText;
+                }
+
+                // check if callback is a function
+                if(typeof callback === "function") {
+                    callback(response);
+                }
+            }
+        };
+
+        request.open("get", dataUrl, true);
+        request.send(null);
+
+    }
+
+}
\ No newline at end of file
diff --git a/scripts/haltestellen.js b/scripts/haltestellen.js
index 90010d0..18a389f 100644
--- a/scripts/haltestellen.js
+++ b/scripts/haltestellen.js
@@ -61,24 +61,6 @@ function ajaxCall(dataUrl, outputElement, callback, responseType) {
 
 }
 
-// decode special characters with their utf-8 representation
-function decodeHtml(token) {
-
-    var i,
-        y,
-        start = [33, 58, 91, 123, 161],
-        stop = [47, 64, 96, 126, 255],
-        startLength = start.length;
-
-    for (y = 0; y < startLength; y++) {
-        for (i = start[y]; i <= stop[y]; i++) {
-            token = token.replace("&#" + i +";", String.fromCharCode(255));
-        }
-    }
-
-    return token;
-}
-
 
 // wrap all in anonymous function to get out of global scope
 (function() {
@@ -146,8 +128,9 @@ function decodeHtml(token) {
 
                 // replace useless chars & split string into array
                 data = data.replace(/\(.+?\)/gi, '');    // remove all content in round parentheses
+                data = data.replace('ß', 'ss');          // remove some special characters
                 data = data.replace(/<(.+?)>/gi, '$1');  // remove tag parentheses to prevent code injection
-                data = data.slice(3, -3).split("],[");   // split at array boundaries to get an array of arrays
+                data = data.slice(3, -3).split("],[");      // split at array boundaries to get an array of arrays
 
                 // debug log
                 if (DEBUG === 1) {console.log("parsed data: " + data);}
@@ -231,6 +214,7 @@ function decodeHtml(token) {
                 // replace useless chars & split string into array
                 data = data.replace(/\[\[\[.+?\]\],/gi, '[');   // remove useless first city entry
                 data = data.replace(/\(.+?\)/gi, '');       // remove all content in round parentheses
+                data = data.replace('ß', 'ss');             // remove some special characters
                 data = data.replace(/<(.+?)>/gi, '$1');     // remove tag parentheses to prevent code injection
                 data = data.slice(4, -4).split("],[");      // split at array boundaries to get an array of arrays