Use Math.round() instead of Number() to convert floating point numbers

to integer.  Fixes overflow probelm that causes #1490.  Thanks to
nkinkade for the fix.

2 files changed, 8 insertions, 6 deletions

diff --git a/lib/gallery.common.js b/lib/gallery.common.js
index 2dbd7c7c..697a33cb 100644
--- a/lib/gallery.common.js
+++ b/lib/gallery.common.js
@@ -171,10 +171,10 @@
 
     // handle the case where the calculation is almost zero (2.14e-14)
     return {
-      top: Number((height - imageHeight) / 2),
-      left: Number((width - imageWidth) / 2),
-      width: Number(imageWidth),
-      height: Number(imageHeight)
+      top: Math.round((height - imageHeight) / 2),
+      left: Math.round((width - imageWidth) / 2),
+      width: Math.round(imageWidth),
+      height: Math.round(imageHeight)
     };
   };
 
diff --git a/lib/gallery.show_full_size.js b/lib/gallery.show_full_size.js
index 9eb6f3af..531d2a3a 100644
--- a/lib/gallery.show_full_size.js
+++ b/lib/gallery.show_full_size.js
@@ -20,8 +20,10 @@
       image_size = $.gallery_auto_fit_window(image_width, image_height);
     } else {
       image_size = {
-         top: Number((height - image_height) / 2), left: Number((width - image_width) / 2),
-         width: Number(image_width),  height: Number(image_height)
+         top: Math.round((height - image_height) / 2),
+	 left: Math.round((width - image_width) / 2),
+         width: Math.round(image_width),
+	 height: Math.round(image_height)
       };
     }