diff --git a/lib/std.js b/lib/std.js
index 9c0c1f9..d6e6d6f 100644
--- a/lib/std.js
+++ b/lib/std.js
@@ -346,10 +346,11 @@ StdEvent.CAPTURING_PHASE = 1;    // Not used but to be compatible
 StdEvent.AT_TARGET = 2;
 StdEvent.BUBBLING_PHASE = 3;    // Not used but to be compatible
 
-function StdEventTarget() {
+// maybe, the "EventTarget" is preserved word
+function StdEventableObject() {
     this.__events__ = [];
 
-    this.dispatchEvent = function(event) {
+    this.dispatchEvent = function(event, __exception__) {
         event.target = this;
         event.isTrusted = false;
         event.eventPhase = StdEvent.AT_TARGET;
@@ -357,7 +358,11 @@ function StdEventTarget() {
         for (var i = 0; i < this.__events__.length; i++) {
             var e = this.__events__[i];
             if (e.type == event.type && typeof(e.listener) === "function") {
-                e.listener(event);
+				try {
+					e.listener(event, __exception__);
+				} catch (ex) {
+					this.dispatchEvent(new StdEvent("error"), ex);
+				}
             }
         }
     };
@@ -367,9 +372,9 @@ function StdEventTarget() {
             this.__events__.push({
                 "type": type,
                 "listener": listener,
-                "counter": StdEventTarget.__counter__
+                "counter": StdEventableObject.__counter__
             });
-            StdEventTarget.__counter__++;
+            StdEventableObject.__counter__++;
         } else {
             throw new TypeError("EventListener must be a function");
         }
@@ -388,7 +393,7 @@ function StdEventTarget() {
         }
     };
 };
-StdEventTarget.__counter__ = 0;
+StdEventableObject.__counter__ = 0;
 
 function AsyncFunction(f, _filename) {
     this.f = f;
@@ -450,12 +455,12 @@ global.splitLn = splitLn;
 global.addslashes = addslashes;
 global.AsyncFunction = AsyncFunction;
 
-exports.VERSIONINFO = "Standard Library (std.js) version 0.7.1";
+exports.VERSIONINFO = "Standard Library (std.js) version 0.7.2";
 exports.global = global;
 exports.require = global.require;
 
 exports.Event = StdEvent;
-exports.EventTarget = StdEventTarget;
+exports.EventableObject = StdEventableObject;
 
 exports.alert = alert;
 exports.cartesian = cartesian;