jquery-loadmask not working properly in IE8

I have used jquery-loadmask plugin on my app, it shows processing animation when ajax call starts and hides animation when call finishes.

It works fine in Firefox and it IE8, if i run call to masking function in developer toolbar it shows animation but in ajax call it doesnt work. Any idea wh开发者_JAVA技巧y?

Here is how i am calling it :

jQuery("#content").mask("Processing....");

Here is the link to library :

http://code.google.com/p/jquery-loadmask/

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It was issue with DOM not refreshing in IE that quick. Fixed this by focusing mask div after making call to load it.