How to have div min height

Basically when you specify a height to a div, ie6 will take it as minimum height. But ie7, firefox, chrome and modern browser will treat as height. So here is a simple way to have minimum height to all web browser.

Css Code:
.test{min-height:50px;height:auto!important;height:50px;}

For example, if you want to give 50px height to a div, Use the above code will work fine. That after 50px the height of the div will automatically expands.