There’s no way to help with something like this without seeing the site. Also, since that’s a commercial theme, help here may be limited since we don’t have access to the theme. You may want to consult with the developer.
I listed the website url in the post above.
I can also try to consult with the developer. But do you have any thoughts after visiting the site?
Thanks again.
Looks like you don’t have any CSS for the sidebar – this element shows no CSS in Firebug:
<div class="sidebar_wrapper">
Looks like you need a width and possibly float on that element.
But you also have some markup and CSS errors that MIGHT be problematic – in particular, extra div tags can cause these kinds of problems:
http://jigsaw.w3.org/css-validator/validator?uri=http%3A%2F%2Fwww.trnmagazine.com%2F&profile=css3&usermedium=all&warning=1&vextwarning=&lang=en
http://jigsaw.w3.org/css-validator/validator?uri=http%3A%2F%2Fwww.trnmagazine.com%2F&profile=css3&usermedium=all&warning=1&vextwarning=&lang=en