diff --git a/README b/README
deleted file mode 100644
index f50bbb8..0000000
--- a/README
+++ /dev/null
@@ -1,4 +0,0 @@
-Example:
-jQuery(document).ready(function($) {
-	$(expr).calendar();
-});
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..2f41a3f
--- /dev/null
+++ b/README.md
@@ -0,0 +1,11 @@
+## Overview
+
+jQuery Simple Calendar Plugin
+
+## Example
+
+```javascript
+jQuery(function($) {
+  $('#calendar').calendar();
+});
+```
diff --git a/jquery.calendar.js b/jquery.calendar.js
index 4fce6a4..1e0205c 100644
--- a/jquery.calendar.js
+++ b/jquery.calendar.js
@@ -1,7 +1,7 @@
 /**
  * jQuery.calendar
  *
- * @version  1.0.3
+ * @version  1.0.4
  * @author   rew <rewish.org@gmail.com>
  * @link     http://rewish.org/javascript/jquery_calendar
  * @license  http://rewish.org/license/mit The MIT License
@@ -130,7 +130,7 @@ Calendar.prototype = $.extend({
 		var week = [];
 		var weekName = this.option.week[this.option.lang] || this.option.week;
 		for (var i = 0, w; w = weekName[i]; i++) {
-			week[week.length] = '<th class="'+ _weekName[i] +'">'+ w +'</td>';
+			week[week.length] = '<th class="'+ _weekName[i] +'">'+ w +'</th>';
 		}
 		this.thead = $('<thead/>').append(this.tr.clone().html(week.join('')))
 		// tbody