Iframe border problem

[monkey258]

I have an Iframe with a border. IE shows a white stripe on the inside of the right and bottom borders. FF shows it correctly. I need help makeing it go away.
426


<iframe width="400" frameborder="0" height="150" src="/chatbox/testb.html"
marginheight="0" marginwidth="0" scrolling="no" name="add" style="border: #4EAD18 3px solid" id="add"></iframe>

[jscheuer1]

<div style="width:400px;height:150px;"><iframe width="100%" frameborder="0" height="100%" src="/chatbox/testb.html"
marginheight="0" marginwidth="0" scrolling="no" name="add" style="border: #4EAD18 3px solid" id="add"></iframe></div>