event example

lib/filter.js

@@ -31,6 +31,19 @@ var Filter = function(options, impl) {
     this.impl = impl;
     this.callbacks = [];
 
+    if (typeof options !== "string") {
+        // evaluate lazy properties
+        options = {
+            to: options.to,
+            topics: options.topics,
+            earliest: options.earliest,
+            latest: options.latest,
+            max: options.max,
+            skip: options.skip,
+            address: options.address
+        };
+    }
+
     this.id = impl.newFilter(options);
     web3.provider.startPolling({call: impl.changed, args: [this.id]}, this.id, this.trigger.bind(this));
 };