diff --git a/calendar-month.php b/calendar-month.php
index c73b716..da63ead 100644
--- a/calendar-month.php
+++ b/calendar-month.php
@@ -32,24 +32,10 @@
             </div>
         </div>
 
-        <!-- Dialog to ask user for ICS URL if not specified through GET -->
-        <div class="dialog-parent <?php hideMissingIcsDialog(); ?>">
-            <div class="dialog">
-                <div class="dialog-content">
-                    Es wurde keine ICS URL als GET Parameter &uuml;bergeben.<br>
-                    <br>
-                    <label>Anzuzeigende ICS URL:</label>
-                    <input type="text" form="dialog-form" name="ics_url" />
-                </div>
-                <div class="dialog-buttons">
-                    <form id="dialog-form" method="get"></form>
-                    <input type="submit" form="dialog-form" value="OK" />
-                </div>
-            </div>
-        </div>
+        <?php echoIcsUrlDialog(); ?>
 
         <!-- Renders PHP errors nicely as HTML dialog -->
-        <?php insertErrorsHtml(); ?>
+        <?php echoErrorsHtml(); ?>
     </body>
 
     <script src="script/dialog.js"></script>
diff --git a/flow.php b/flow.php
index 25d0c39..c667cae 100644
--- a/flow.php
+++ b/flow.php
@@ -19,21 +19,10 @@
             </div>
         </div>
 
-        <!-- Dialog to ask user for ICS URL if not specified through GET -->
-        <div class="dialog-parent <?php hideMissingIcsDialog(); ?>">
-            <div class="dialog">
-                <div class="dialog-content">
-                    Es wurde keine ICS URL als GET Parameter &uuml;bergeben.<br>
-                    <br>
-                    <label>Anzuzeigende ICS URL:</label>
-                    <input type="text" form="dialog-form" name="icsUrl" />
-                </div>
-                <div class="dialog-buttons">
-                    <form id="dialog-form" method="get"></form>
-                    <input type="submit" form="dialog-form" value="OK" />
-                </div>
-            </div>
-        </div>
+        <?php echoIcsUrlDialog(); ?>
+
+        <!-- Renders PHP errors nicely as HTML dialog -->
+        <?php echoErrorsHtml(); ?>
     </body>
 
     <script src="script/dialog.js"></script>
diff --git a/php/html-components.php b/php/html-components.php
index cda5e5e..af069a8 100644
--- a/php/html-components.php
+++ b/php/html-components.php
@@ -30,7 +30,7 @@ function debug ($text) {
 /**
  * Echoes HTML code to display all collected error messages
  */
-function insertErrorsHtml() {
+function echoErrorsHtml() {
     global $_ERRORS;
 
     if (count ($_ERRORS) == 0) return;
@@ -61,13 +61,29 @@ function insertErrorsHtml() {
 }
 
 /**
- * Hides the dialog box asking for an ICS URL if one
- * was already specified by the user
+ * Shows a dialog box asking for an ICS URL if one
+ * was not specified by the user
  */
-function hideMissingIcsDialog () {
+function echoIcsUrlDialog () {
     global $_GET;
 
-    if (isset ($_GET["ics_url"]) && $_GET["ics_url"] != "") {
-        echo "hidden";
+    if (!isset ($_GET["ics_url"]) || $_GET["ics_url"] == "") {
+        echo '
+            <!-- Dialog to ask user for ICS URL if not specified through GET -->
+            <div class="dialog-parent <?php hideMissingIcsDialog(); ?>">
+                <div class="dialog">
+                    <div class="dialog-content">
+                        Es wurde keine ICS URL als GET Parameter &uuml;bergeben.<br>
+                        <br>
+                        <label>Anzuzeigende ICS URL:</label>
+                        <input type="text" form="dialog-form" name="ics_url" />
+                    </div>
+                    <div class="dialog-buttons">
+                        <form id="dialog-form" method="get"></form>
+                        <input type="submit" form="dialog-form" value="OK" />
+                    </div>
+                </div>
+            </div>
+        ';
     }
 }
\ No newline at end of file