OK, maybe can be done (maybe not), send URL please to a post at your blog with two images, one with left and one with right alignment ??
Also, why don’t you use classes instead? It’ll be much easier for you:)
Here’s a CSS excerpt from the default theme:
/* Using 'class="alignright"' on an image will (who would've
thought?!) align the image to the right. And using 'class="centered',
will of course center the image. This is much better than using
align="center", being much more futureproof (and valid) */
img.centered {
display: block;
margin-left: auto;
margin-right: auto;
}
img.alignright {
padding: 4px;
margin: 0 0 2px 7px;
display: inline;
}
img.alignleft {
padding: 4px;
margin: 0 7px 2px 0;
display: inline;
}
.alignright {
float: right;
}
.alignleft {
float: left
}
Using standard classes like these ones will give you the flexibility of aligning images left / or right, with custom padding, both in the WP admin area editor and in your theme (whatever theme that is).
You’ll just need to copy the above styles (or similar styles from your theme) to the admin CSS file, and this’ll do the trick:)
Hope this helps, report back later, so we can know what happened:)