How to set style for a grid using javascript

Hi everybody, How to set style for a grid using javascript. Thanks

For example, how to set the following style for a grid using javascript
.active-controls-grid {height: 100%; font: menu;}
.active-grid-column {border-right: 0px solid threedlightshadow;}
.active-grid-row {border-bottom: 0px solid threedlightshadow;}
.active-scroll-left, .active-scroll-corner {display: none}
.active-scroll-top, .active-scroll-data {padding-left: 0px}