diff --git a/brozzler/js-templates/umbraBehavior.js.j2 b/brozzler/js-templates/umbraBehavior.js.j2
index 5584e07..7b3e46b 100644
--- a/brozzler/js-templates/umbraBehavior.js.j2
+++ b/brozzler/js-templates/umbraBehavior.js.j2
@@ -25,7 +25,7 @@ class UmbraBehavior {
         this.alreadyDone = [];
         this.idleSince = null;
         this.intervalId = null;
-        this.intervalTimeMs = 300;
+        this.intervalTimeMs = {{interval or '300'}};
         this.index = 0;
     }
 
@@ -33,7 +33,7 @@ class UmbraBehavior {
         // should match older default and simpleclicks behavior, and more
         var k = this.index;
         var selector = this.actions[k].selector;
-        var idCheck = this.actions[k].idcheck ? this.actions[k].idcheck : true;
+        var idCheck = this.actions[k].idcheck === false ? this.actions[k].idcheck : true;
         var action = this.actions[k].do ? this.actions[k].do : 'click';
         var closeSelector = this.actions[k].closeSelector ? this.actions[k].closeSelector : null;
         var didSomething = false;
@@ -63,7 +63,7 @@ class UmbraBehavior {
                 continue;
             }
             for ( var i = 0; i < doTargetsLength; i++) {
-                if idCheck and (this.alreadyDone.indexOf(doTargets[i]) > -1) {
+                if (idCheck && this.alreadyDone.indexOf(doTargets[i]) > -1) {
                     continue;
                 }
                 if (!this.isVisible(doTargets[i])) {