Improved slider behaviour and fixed prefix handling
diff --git a/dev/js/src/hint/prefix.js b/dev/js/src/hint/prefix.js
index 7586617..bdc7bdf 100644
--- a/dev/js/src/hint/prefix.js
+++ b/dev/js/src/hint/prefix.js
@@ -14,10 +14,11 @@
      */
     onclick : function () {
       var m = this.menu();
+      var value = this.value();
       var h = m.hint();
       m.hide();
 
-      h.inputField().insert(this.value());
+      h.inputField().insert(value);
       h.active = false;
     }
   };