diff --git a/ext/content.js b/ext/content.js
index c36b7381..5ff0031e 100644
--- a/ext/content.js
+++ b/ext/content.js
@@ -37,7 +37,7 @@ function getRangeAtCursor(e, lookAhead) {
 
 
 function onMouseDown(e) {
-    e.preventDefault();
+    // e.preventDefault();
 
     const range = getRangeAtCursor(e, 20);
     if (range === null) {
diff --git a/ext/jp/init.js b/ext/jp/init.js
index 81c06d3d..d3345a38 100644
--- a/ext/jp/init.js
+++ b/ext/jp/init.js
@@ -33,7 +33,7 @@ const trans = new Translator(res, onInit);
 function onMessage(request, sender, callback) {
     switch (request.action.toLowerCase()) {
         case 'define':
-            callback(trans.findTerm(request.term));
+            callback(trans.findTerm(request.text));
             break;
     }
 }
diff --git a/ext/util.js b/ext/util.js
index 8523fe22..0b92cde0 100644
--- a/ext/util.js
+++ b/ext/util.js
@@ -18,5 +18,5 @@
 
 
 function findTerm(text, callback) {
-    chrome.runtime.sendMessage({action: 'define', text: text}, callback);
+    window.chrome.runtime.sendMessage({action: 'define', text: text}, callback);
 }