I normally work on ASP.net pages and I use the .net calendar control provided by Microsoft. I find that it works well.
Someone asked me to add a clickable calendar widget to a classic ASP page, so I would like to know what is the easiest way to add a clickable calendar widget to a classic ASP page. All I need is a calendar that the user clicks and then the date selected is copied into a text box on the page.
Take a look at the Jquery UI, it has a nice calendar widget that is really easy to install.
http://jqueryui.com/demos/datepicker/