I am sure this will look much better
though:
For those of you interested you add a style to the day you want in your
Calendar_Dayrender event like this:
Dim c as TableCell
C = e.Cell
c.Style.Add("BACKGROUND-IMAGE",
"url(http://localhost/examples/Calendar/Images/holiday_cal_test.gif
<http://localhost/examples/Calendar/Images/holiday_cal_test.gif> );")
Why one cant use a relative path i.e images/ holiday_cal_test.gif I cant
imagine, if anyone knows how please share!