diff --git a/README.asciidoc b/README.asciidoc
index 1b0c439..b96a41b 100644
--- a/README.asciidoc
+++ b/README.asciidoc
@@ -16,7 +16,7 @@
 
 http://cemerick.com[I] needed a good in-browser visual diff tool, and couldn't find anything suitable, so I built *jsdifflib* in Feb 2007 and open-sourced it soon thereafter.  It's apparently been used a fair bit since then.  Maybe you'll find it useful.
 
-===== If you *do* find jsdifflib useful, _please support my open source work via a bitcoin donation/tip_ to 1Htu5T1Mkk7bU6XmzYjeQG25xSCgEjVZHn.  Thanks!
+===== If you *do* find jsdifflib useful, _please support my open source work via a bitcoin donation/tip_ to 19qCqZxAdRF4eZfyZD2GQnAWk2Mz7DZZVf.  Thanks!
 
 [[overview]]
 == Overview
diff --git a/difflib.js b/difflib.js
index 5b8d769..191fe45 100755
--- a/difflib.js
+++ b/difflib.js
@@ -28,9 +28,9 @@ ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF S
 DAMAGE.
 ***/
 /* Author: Chas Emerick <cemerick@snowtide.com> */
-__whitespace = {" ":true, "\t":true, "\n":true, "\f":true, "\r":true};
+var __whitespace = {" ":true, "\t":true, "\n":true, "\f":true, "\r":true};
 
-difflib = {
+var difflib = {
 	defaultJunkFunction: function (c) {
 		return __whitespace.hasOwnProperty(c);
 	},
@@ -171,6 +171,7 @@ difflib = {
 			var bestj = blo;
 			var bestsize = 0;
 			var j = null;
+			var k;
 	
 			var j2len = {};
 			var nothing = [];
@@ -249,7 +250,8 @@ difflib = {
 			
 			matching_blocks.sort(difflib.__ntuplecomp);
 	
-			var i1 = j1 = k1 = block = 0;
+			var i1 = 0, j1 = 0, k1 = 0, block = 0;
+			var i2, j2, k2;
 			var non_adjacent = [];
 			for (var idx in matching_blocks) {
 				if (matching_blocks.hasOwnProperty(idx)) {
diff --git a/diffview.js b/diffview.js
index 372753d..0414aba 100644
--- a/diffview.js
+++ b/diffview.js
@@ -27,7 +27,7 @@ The views and conclusions contained in the software and documentation are those
 authors and should not be interpreted as representing official policies, either expressed
 or implied, of Chas Emerick.
 */
-diffview = {
+var diffview = {
 	/**
 	 * Builds and returns a visual diff view.  The single parameter, `params', should contain
 	 * the following values: