Hmmm, the closer I look at the two, they are both different sites, it seems. When I copied your URL to IE6.0, the properties are all different. How weird!
Okay, I think I know what it is. You are using the backslash \ instead of forward slash / for your paths.
Here, this is how you have it:
<img src="Pics\Bars\newsbar.gif" width="300" height="30">
FireFox (Netscape is the same, I just checked) must not interpret the backslash. It reads it as a space instead of a slash.