Merge pull request #1470 from Dvidan/bug/overlap_transparent

Transparent image overlap when using Overlap=0 in dzi

src/tile.js

@@ -356,10 +356,10 @@ $.Tile.prototype = {
             //clearing only the inside of the rectangle occupied
             //by the png prevents edge flikering
             context.clearRect(
-                position.x + 1,
+                position.x,
-                position.y + 1,
+                position.y,
-                size.x - 2,
+                size.x,
-                size.y - 2
+                size.y
             );
         }