Adding css effect to gridview while you mouse over and out from gridview

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
e.Row.Attributes["onmouseover"] = "this.className='PostingPanelTableGrids';"
e.Row.Attributes["onmouseout"] = "this.className='PostingPanelTableGrid';";
}