I think you can also use:
Code:
<img src="../somefolder/someimage"
The tree for that example is like this:
Code:
somebasefolder
|
--somefolder
| |
| --someimage.jpg
|
--folderofhtml
|
--the html file you're using.html
The "../" means go back one folder. Test it to make sure, but I think that works.