I want to make a monthly alert message to guest who enter my (html) web page to remind him that he should pay for the next month. (notice: this monthly alert should be valid for 3 days before the month end).
sorry, i want to notify guests with pop-up message.
but I should add it in html page, so js file will be better.
like that (http://www.globalrph.com/davescripts/month.htm) but with customized days. (like the last 3 days in month)