I've placed a custom image button inside a table cell. I've used vertical-align: text-top in CSS for the cell to make the image button appear right below the upper border of the cell. There is an empty space between the image button and the lower border of the cell that I'm not able to get rid of. I've tried padding-bottom:0 in CSS for the cell, but it doesn't fix the problem. I've also tried height:73 (the height of the image) in HTML and height:73px in CSS for the cell without any success. I'm using Internet Explorer 6. How do I get rid of this space?