Stretch image in Panel works, but in table needs minimum width

Hi,
I have a panel where I have set a background image. (This image can stretch with the style I have declared) 
In this panel I have put a table with 3 Columns The table has width="100%" to be as wide as the panel. Each column has a label.
What I am trying to do is that Column 2 & 3 will have a static width and the Column 1 will have a dynamically width that can change if the browser window is adjusting its width.
 
The problem in the code below is that the Column 2 & 3 width is getting smaller if the browser windows width is getting as small as possible. I am trying to have the width static all the way but in when the browserwindow get a very small width the columns is getting small too.
Is it possible to set a minimum width to a <td> ?
I have commented out the image to see more clear what happens.
I wonder how I can achieve this ? (At the same time I do wonder if thi ...