It doesn't come in center when the document.body is masked

[GoogleCodeExporter]

What steps will reproduce the problem?
1. open console and write this code $(document.body).mask("loading...");
2. The image and label doesn't come in the center of the page, even people can 
not able to see.

What is the expected output? What do you see instead?
The image and label should come in center of the page.

What version of the product are you using? On what operating system?
Window XP, IE 8, Mozila 23.

Original issue reported on code.google.com by tameshwar.nirmalkar on 22 Jul 2013 at 2:01

Attachments:

• error.JPG