I am using Smart Backgrounds - and I love it. I am using it to replace the header image based on the category.

I would like to use it to also change the whole page background, but I'm not quite sure how to do that. I saw the initial posts in this thread that will change the content background, but I am a little stuck on how to change the whole page background.

I have this added to my tpl_main_page.php:
<body id="<?php echo $body_id . 'Body'; ?>" class="smartBG<?php echo smart_backgrounds('.jpg');?>"<?php if($zv_onload !='') echo ' onload="'.$zv_onload.'"'; ?>>

I have my image files set as bodybg_cat#.jpg,
and I was initially using "#mainWrapper" in my css file, but that only covers the content background.

Any hints/clues would be greatly appreciated.

The site is: http://store.gpwalsh.com - the main page is not "set-up" because it isn't being used, they just want to use the category pages.

Thank you,

Liz