Adding to plugins.jquery.com

autosize.jquery.json

@@ -0,0 +1,24 @@
+{
+	"name": "autosize",
+	"title": "Autosize",
+	"description": "enables automatic height for textarea elements",
+	"keywords": [
+		"form",
+		"textarea",
+		"ui"
+	],
+	"version": "1.15.0",
+	"author": {
+		"name": "Jack Moore",
+		"url": "http://www.jacklmoore.com"
+	},
+	"licenses": [
+		{
+			"type": "MIT",
+			"url": "http://www.opensource.org/licenses/mit-license.php"
+		}
+	],
+	"homepage": "http://jacklmoore.com/autosize",
+	"demo": "http://jacklmoore.com/autosize",
+	"dependencies": { "jquery": ">=1.4" }
+}

jquery.autosize.js

@@ -65,8 +65,7 @@
 				return;
 			}
 
- 			minHeight = parseInt($ta.css('minHeight'), 10);
-			minHeight = minHeight || $ta.height();
+			minHeight = parseInt($ta.css('minHeight'), 10) || $ta.height();
 
 			if ($ta.css('box-sizing') === borderBox || $ta.css('-moz-box-sizing') === borderBox || $ta.css('-webkit-box-sizing') === borderBox){
 				boxOffset = $ta.outerHeight() - $ta.height();
@@ -113,7 +112,8 @@
 					original = parseInt(ta.style.height,10);
 
 					// Update the width in case the original textarea width has changed
-					mirror.style.width = ($ta.width() < 0 ? 0 : $ta.width()) + 'px';
+					// A floor of 0 is needed because IE8 returns a negative value for hidden textareas, raising an error.
+					mirror.style.width = Math.max($ta.width(), 0) + 'px';
 
 					// The following three lines can be replaced with `height = mirror.scrollHeight` when dropping IE7 support.
 					mirror.scrollTop = 0;