WordPress page layout goes bad when I pass google analytics parameters

I have the latest wordpress 3.9.0 installed on this URL: http://www.adlabsimagica.com

While the pages and the website is working fine, the page layout breaks out when I pass GA utm parameters.

To understand the exact nature of the problem you can see this URL (I can’t post two links with and without, since I’m new and am allowed to post just one link)

http://www.adlabsimagica.com/summer-fest/?utm_source=idiva&utm_medium=innovation&utm_campaign=SummerFest&utm_content=banners

If you take out the parameters from the link, it opens fine, but with the parameters the layout breaks.

Can you help me identify why this is happening and how can I fix it?