Adding facebook fan page widget to the sidebar, makes horizontal scrollbar

When i add the facebook fan page code to a "Text" widget in the sidebar, it makes my site show horizontal scrollbar, without actually using any real estate to the sides that needs scrolling

here is the code

<div id="fb-root"></div><script src="http://connect.facebook.net/en_US/all.js#xfbml=1"></script><fb:like-box href="http://www.facebook.com/fanpage-name-edited-out" width="200" show_faces="true" border_color="" stream="true" header="false"></fb:like-box>

Code (markup):

and here is a sample page that does that
http://miragehotellasvegas1.com/

any ideas?

 

no one ?