jQuery Masonry plugin box arrangement
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I introduced few tiny changes to a Tumblr theme of mine concerning the horizontal alignment of the permalink pages. I managed to change it to center but I noticed on the homepage, the sleek box arrangement that I had there has been altered to less pleasant one.

Here's the line that I changed or more specifically the value:

    $container.masonry({itemSelector:'.post' ==> $container.masonry({itemSelector:'.block' 

Can you guys tell me please how to fix this and keep the old box arrangement?

Here's the website address:

Westamerican @ tumblr com

Below are screebshots of the box arrangements:

Before: http://pic.twitter.com/7hYotCUH

After: http://pic.twitter.com/SGNeuw3X

Thanks in advance for your help and cooperation.