Firefox not extending containing div

[cream babine]

I don't want to post a whole bunch of code here, but I'm having trouble with a page that behaves fine in IE but not Firefox, http://dev.ndbvme.org/index2.html. When I removed the floats from the CSS, http://dev.ndbvme.org/styles.css, it worked, but I had to put them back in to get the 3 column layout to work. Am I missing something simple?

This is the code that should set the containing div:

 #border  {
    background: #57D9FF;
    background-image: url(images/bg.jpg);
    background-repeat: repeat-y;
    border: #57D9FF solid 2px;
    width: 825px;
    text-align: left;
    margin-left: auto;
    margin-right: auto;
}

I ran CSS and HTML validators,too, but wasn't able to find the problem. Any help would be appreciated. Thanks!

[drhowarddrfine]

Elements are never to expand to contain floated elements. This is a bug in IE. To make modern standards compliant browsers, such as Firefox, do this, add 'overflow:auto' to the containing divs CSS. This tells the containing element to expand to contain elements that overflow it.

[cream babine]

Yeah, I realized that IE was probably the culprit. Thanks for answering my call for help tho.