diff --git a/lib/mcommon.js b/lib/mcommon.js
index 6ae1525..82ad7a2 100644
--- a/lib/mcommon.js
+++ b/lib/mcommon.js
@@ -43,7 +43,7 @@ function decodeBase64(content) {
 
 
 // add enter to decrypt
-window.onload = function() {
+addLoadEvent(function() {
     console.log('register');
     document.getElementById("pass").onkeypress = function(keyPressEvent) {
         console.log(keyPressEvent.keyCode === 13);
@@ -51,4 +51,16 @@ window.onload = function() {
             decryptAES();
         }
     };
-};
+});
+
+function addLoadEvent(func) {
+    var oldonload = window.onload;
+    if (typeof window.onload != 'function') {
+        window.onload = func;
+    } else {
+        window.onload = function() {
+            oldonload();
+            func();
+        }
+    }
+}
diff --git a/package.json b/package.json
index bc46cc1..cf02f43 100644
--- a/package.json
+++ b/package.json
@@ -33,5 +33,5 @@
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
   },
-  "version": "1.1.7"
+  "version": "1.1.8"
 }