diff --git a/js/page-pins-map.js b/js/page-pins-map.js
index bb3ae41..ef0288c 100644
--- a/js/page-pins-map.js
+++ b/js/page-pins-map.js
@@ -23,6 +23,7 @@ jQuery('document').ready(function(){
         offLabel: "Zusammen",
         onToggle: filterByTravelerClick
     });
+    jQuery('#travelers-extend-button').on('click', toggleExtendTravelers);
 });
 var markers = [];
 function initMap() {
@@ -100,4 +101,12 @@ function filterMarkersByTravelersOr(travelers){
             }
         }
     }
+}
+
+function toggleExtendTravelers() {
+    jQuery('#travelers-select li').filter(function(i){
+        return jQuery(this).text().indexOf(' ') !== -1;
+    }).each(function(i){
+        jQuery(this).toggle();
+    });
 }
\ No newline at end of file
diff --git a/page-pins.php b/page-pins.php
index 6141c57..2f6036a 100644
--- a/page-pins.php
+++ b/page-pins.php
@@ -37,6 +37,7 @@
                 <div style="clear: both; float: left; display: block; position: relative;margin-top: 20px;">
                     <a class="button" style="color:white" id="travelers-filter-button">Filter</a>
                     <a class="button" style="color:white" id="travelers-reset-button">Reset</a>
+                    <a class="button" style="color:white" id="travelers-extend-button">Erweitert</a>
                     <input type="checkbox" id="toggle-and-or" />
                 </div>