How do I add dates from a web page into iCal?

Hello. I would love to find a way to input dates from a web page, into iCal as an event. Right now, if there is a conference or whatever that is on such and such a date, I have to keep the web page open that has the dates and time, and then open iCal, and create a new event on that date, etc. Is there a way to highlight said dates on a web page, run some automation, and voila, it is a new event in iCal?