diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 40d15c9a1..5812f0fdc 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -44,6 +44,9 @@ Guidlines:
  - Please make your commits in logical sections with clear commit messages
  - Please avoid committing in the build Chart.js & Chart.min.js file, as it may cause conflicts when merging back
 
+Joining the Project
+-------------
+ - Active committers and contributors are invited to introduce yourself and request commit access to this project.  Please send an email to hello@nickdownie.com or file an issue. 
 
 License
 -------
diff --git a/Chart.js b/Chart.js
index e34e08a48..3c217c87d 100644
--- a/Chart.js
+++ b/Chart.js
@@ -25,8 +25,25 @@
 		this.ctx = context;
 
 		//Variables global to the chart
-		var width = this.width = context.canvas.width;
-		var height = this.height = context.canvas.height;
+		var computeDimension = function(element,dimension)
+		{
+			if (element['offset'+dimension])
+			{
+				return element['offset'+dimension];
+			}
+			else
+			{
+				return document.defaultView.getComputedStyle(element).getPropertyValue(dimension);
+			}
+		}
+
+		var width = this.width = computeDimension(context.canvas,'Width');
+		var height = this.height = computeDimension(context.canvas,'Height');
+
+		// Firefox requires this to work correctly
+		context.canvas.width  = width;
+		context.canvas.height = height;
+
 		this.aspectRatio = this.width / this.height;
 		//High pixel density displays - multiply the size of the canvas height/width by the device pixel ratio, then scale.
 		helpers.retinaScale(this);
diff --git a/src/Chart.PolarArea.js b/src/Chart.PolarArea.js
index 4dbf2eb92..8f2b9c52c 100644
--- a/src/Chart.PolarArea.js
+++ b/src/Chart.PolarArea.js
@@ -195,6 +195,8 @@
 			helpers.each(this.segments,function(segment){
 				segment.save();
 			});
+			
+			this.reflow();
 			this.render();
 		},
 		reflow : function(){