Dynamic Resizing of Images?

Hello,

I'm working on a website using a fluid-width theme ("Sky"). We've set up a grid view for images to display vertically (1 column) in the right sidebar, with ImageCache providing the scaling.

Now -- because the theme is fluid -- if you expand the browser window the right sidebar area increases too. And the client would like the images there to also expand accordingly.

Is this possible with ImageCache? I searched the issues here, but didn't see anything about this. Any advice would be appreciated!

Jim