I'm not talking about floating, nor z-index (which is used to put one above the other). I'm talking about changing the order that a DIV is displayed through Javascript.
For example, I have:
<div id='bottom'></div>
<div id='header'></div>
I want to change the order so the 'header' will be displayed above the 'bottom', but not "overlaying" it, neither "floating". Just:
<div id='header'></div>
<div id='bottom'></div>
It is a simple question that haven't been asked before, I guess.