day highlight in calender

  if (e.Day.DayNumberText == "20")
        {

            e.Cell.Controls.Add(new LiteralControl("<p>GITM</p>"));
            e.Cell.BorderColor = System.Drawing.Color.Blue;
            e.Cell.BorderWidth = 1;
            e.Cell.BorderStyle = BorderStyle.Groove;
            e.Cell.BackColor = System.Drawing.Color.LightGoldenrodYellow;
        }

< January 2012 >
Su	Mo	Tu	We	Th	Fr	Sa
25	26	27	28	29	30	31
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20GITM	21
22	23	24	25	26	27	28
29	30	31	1	2	3	4