z-index | NN 4 IE 4 CSS 2
| Inherited: No
For a positioned element, this sets the stacking order relative to other elements within the same parent container. See Chapter 4 for details on relationships of element layering amid multiple containers.
CSS Syntax
    z-index: integer | auto
Value
Any integer value. A value of auto is the same as a value of zero. When all elements in the same parent container have the same z-index value, the stacking order is determined by element source code order.
Initial Value
auto
Example
    div#instrux {position: absolute; left: 50; top: 70; z-index: 2}
Applies To
Positioned elements.
Object Model Reference
    [window.]document.getElementById("elementID").style.zIndex