How to change the image size when hover the mouse?

Hi friends,

How to change the image size whenever i hover the mouse on the images. I'm showing the images in the gridview control. The images are taken from the database. This is my code but it is not working properly.

    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            e.Row.Cells[0].Attributes.Add("OnMouseOver","this.style.width='100px';");
            e.Row.Cells[0].Attributes.Add("onmouseout", "this.style.width='80px';");
        }
    }

 

Can anyone solve my problem?