Equal Columns

#container { float: left; overflow: hidden; }
    .ie7 #container { position: relative; }
 
#container div { float: left; background: #ccc; border: 1px solid #000; width: 200px; margin-right: 5px; margin-bottom: -2000px; padding-bottom: 2000px; }
 
#container .col2 { background: #eee; }
 
#container .col3 { margin-right: 0; }