Links Template

I’m working on a site based on the default theme. I’ve modified the theme to a three column layout, navigation in narrow left column, content in wider center and misc. widgets in right column.

I copied my index file and renamed it links.php and then put the correct code into the links.php to display bookmarks. I then created a page called On The Web, told WP to use my links template file. Now when I look at my On The Web page, it renders the links correctly but it’s inserting the class widecolumn into the source code. Which is of course breaking my CSS. The only place I can find the widecolumn class is in files I’m not even using. Why is it inserting the widecolumn class?