diff --git a/src/base58.js b/src/base58.js
index 47e8020..1264196 100644
--- a/src/base58.js
+++ b/src/base58.js
@@ -1,11 +1,9 @@
-
 // https://en.bitcoin.it/wiki/Base58Check_encoding
 
 var BigInteger = require('./jsbn/jsbn');
 var Crypto = require('crypto-js');
-var SHA256 = Crypto.SHA256;
-var WordArray = Crypto.lib.WordArray;
 var convert = require('./convert');
+var SHA256 = Crypto.SHA256;
 
 var alphabet = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
 var base = BigInteger.valueOf(58);
diff --git a/src/ecdsa.js b/src/ecdsa.js
index c35eac4..668555a 100644
--- a/src/ecdsa.js
+++ b/src/ecdsa.js
@@ -248,7 +248,7 @@ var ECDSA = {
     var alpha = x.multiply(x).multiply(x).add(a.multiply(x)).add(b).mod(p);
     var beta = alpha.modPow(P_OVER_FOUR, p);
 
-    var xorOdd = beta.isEven() ? (i % 2) : ((i+1) % 2);
+//    var xorOdd = beta.isEven() ? (i % 2) : ((i+1) % 2);
     // If beta is even, but y isn't or vice versa, then convert it,
     // otherwise we're done and y == beta.
     var y = (beta.isEven() ? !isYEven : isYEven) ? beta : p.subtract(beta);
diff --git a/src/transaction.js b/src/transaction.js
index 6a4978c..176fb74 100644
--- a/src/transaction.js
+++ b/src/transaction.js
@@ -5,7 +5,6 @@ var convert = require('./convert');
 var ECKey = require('./eckey').ECKey;
 var ECDSA = require('./ecdsa');
 var Address = require('./address');
-var Message = require('./message');
 var SHA256 = require('crypto-js/sha256');
 
 var Transaction = function (doc) {
@@ -139,7 +138,7 @@ Transaction.prototype.serializeHex = function() {
     return convert.bytesToHex(this.serialize());
 }
 
-var OP_CODESEPARATOR = 171;
+//var OP_CODESEPARATOR = 171;
 
 var SIGHASH_ALL = 1;
 var SIGHASH_NONE = 2;
@@ -344,7 +343,7 @@ Transaction.prototype.p2shsign = function(index, script, key, type) {
 
 Transaction.prototype.multisign = Transaction.prototype.p2shsign;
 
-Transaction.prototype.applyMultisigs = function(index, script, sigs, type) {
+Transaction.prototype.applyMultisigs = function(index, script, sigs/*, type*/) {
     this.ins[index].script = Script.createMultiSigInputScript(sigs, script);
 }