Resizing only large images, not small ones.

[johnstires]

I have an html question about resizing an image. How do you resize an image only if it's too big.

For instance if I have an image that is 500px wide and I want to down size it to 450px wide I can write something like this:

<embed src="$filename"


width=450>
</embed>

However if I have an image come in at 200px I do not want it resized to 450px.

How would I write it so that only images over 450px would get resized but images under 450px would stay the same.


Thanks in advanced!