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Re:This Could be Big: Decentralized Web Standard Under Devel... by kerryfalk on Friday May 06, 2011 @04:19PM (#2522321)
Or, to make it _really_ simple:

  <div class="column">1</div>
  <div class="column">2</div>
  <div class="column">3</div>

  div.column {
    margin: 10px;
    width: 200px;
    float: left;
    }
EDIT: Missed the key constraint, resizable center column. What I have above won't work for that, but shows that replacing tables isn't very difficult.
Re:This Could be Big: Decentralized Web Standard Under Devel... by yid on Saturday May 07, 2011 @10:15AM (#2523779)
Nope, not quite. Resize your window to less than 600px and see what happens.
Re:This Could be Big: Decentralized Web Standard Under Devel... by kerryfalk on Saturday May 07, 2011 @03:30PM (#2524380)
You can wrap the above in another div with a width of 660px or greater and it'll have the same effect as a table if the window width is less than the width of the columns (plus margins/padding).