Images not showning in IE6 + 7

Cannot get images to show in CKEditor in IE 6 + 7. Works fine in 8 and firefox.

I have set the baseHref:
$ckeditor->config['baseHref'] = 'http://localhost/site/';

Image code
<img src = "images/home.jpg" alt = "image" />

Meaning full path: http://localhost/site/images/home.jpg

Other than the fact that IE6 & 7 is crap, does anyone have any ideas why they aren't showing?