z-index | NN 4 IE 4 CSS 2
| Inherited: No
For a positioned element, sets the stacking order relative to other elements within the same parent container. See for details on relationships of element layering amid multiple containers.
CSS Syntax
    z-index: integer | auto
JavaScript Equivalent
    zIndex
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 Any positioned element.
Object Model Reference
IE | [window.]document.all.elementID.style.zIndex