From 721d0791bfe814e2503732119e358fa45a68f420 Mon Sep 17 00:00:00 2001
From: Stefan Thomas <justmoon@members.fsf.org>
Date: Thu, 18 Aug 2011 05:00:48 +0100
Subject: [PATCH] Added ability to add fees in createSend.

---
 src/wallet.js | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/wallet.js b/src/wallet.js
index a7927f6..f6ac8ad 100755
--- a/src/wallet.js
+++ b/src/wallet.js
@@ -176,19 +176,24 @@ Bitcoin.Wallet = (function () {
 		return balance;
 	};
 
-	Wallet.prototype.createSend = function (address, sendValue) {
+	Wallet.prototype.createSend = function (address, sendValue, feeValue) {
 		var selectedOuts = [];
+    var txValue = sendValue.add(feeValue);
 		var availableValue = BigInteger.ZERO;
 		for (var i = 0; i < this.unspentOuts.length; i++) {
 			selectedOuts.push(this.unspentOuts[i]);
 			availableValue = availableValue.add(Bitcoin.Util.valueToBigInt(this.unspentOuts[i].out.value));
 
-			if (availableValue.compareTo(sendValue) >= 0) break;
+			if (availableValue.compareTo(txValue) >= 0) break;
 		}
 
+    if (availableValue.compareTo(txValue) < 0) {
+      throw new Error('Insufficient funds.');
+    }
+
 		console.log(selectedOuts);
 
-		var changeValue = availableValue.subtract(sendValue);
+		var changeValue = availableValue.subtract(txValue);
 
 		var sendTx = new Bitcoin.Transaction();