diff --git a/js/som.js b/js/som.js
index e496d36..1931f4f 100644
--- a/js/som.js
+++ b/js/som.js
@@ -211,6 +211,16 @@
 	  })
     .text(function(d) { return d; });
   
+    $('g.u a, g.tsnet a').on('mousedown', function(e) {
+        if (e.which === 2) {
+            e.preventDefault();
+            e.stopPropagation();
+            console.log("middle button clicked " + this.childNodes["0"].textContent);
+            queryKorAPCII(this.childNodes["0"].textContent);
+            return false;
+        }
+    });
+
   var som_interval = setInterval(somStep, 0);
   var it=0;