asp.net(c#) GridView实现鼠标悬停高亮显示

protected   void  GridView1_RowDataBound( object  sender, GridViewRowEventArgs e)
... {
    if (e.Row.RowType == DataControlRowType.DataRow)
    ...{
        e.Row.Attributes.Add("onmouseover", "currentcolor=this.style.backgroundColor;this.style.backgroundColor='#6699ff';");
        e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=currentcolor;");
    }
}