Lock image size with htmltext

I created a flash that imports html content directly from an xml file. The width of the document is expandable depending on page size, so when the page gets wider all of the text on the page adjusts proportinaly, but still wraps around the image as expected. The problem is, that when the page expands, all of my images strech as well. I want the page to be able to change width depending on page size, but I always want the image to stay the same size. I can’t use a movie clip or anything like that because I need the text to wrap around the image and I’m pretty sure you can’t do that with a movie clip. I am using the image size tag in the html, but that only seems to matter when the page is first rendered.
Any help would be greatly appreciated.

Nathan