1 files changed, 7 insertions, 7 deletions

diff --git a/javascripts/Stack.js b/javascripts/Stack.js
index c4e2db9..4ccd74e 100644
--- a/javascripts/Stack.js
+++ b/javascripts/Stack.js
@@ -1,19 +1,19 @@
 /*
  * Stack
- *
+ * Simple implementation of a stack using Array().
  */
 function Stack() {
 	this.a 		= new Array();
 	this.length = 0;
 };
 
-// 
+// Push an item.
 Stack.prototype.push = function(obj) {
 	this.a.push(obj);
 	this.length++;
 };
 
-// 
+// Pop an item.
 Stack.prototype.pop = function() {
 	if (this.isEmpty()) {
 		throw('Stack.pop(): Pop from empty stack.');
@@ -22,7 +22,7 @@ Stack.prototype.pop = function() {
 	return this.a.pop();
 };
 
-// 
+// Check if stack is empty.
 Stack.prototype.isEmpty = function() {
 	if (this.length == 0) {
 		return true;
@@ -30,12 +30,12 @@ Stack.prototype.isEmpty = function() {
 	return false;
 };
 
-// 
+// Get an item at position index.
 Stack.prototype.get = function(index) {
 	return this.a[index];
 };
 
-// 
+// Deep copy a stack.
 Stack.prototype.copy = function() {
 	var c = ((new Array()).concat(this.a));
 	var ret = new Stack();
@@ -44,7 +44,7 @@ Stack.prototype.copy = function() {
 	return ret;
 };
 
-// 
+// String representation.
 Stack.prototype.str = function(separator) {
 	if (!separator) { separator=' ' };
 	var a = new Array();