使用Javascript和HTML表将日期放入日历

So I (again) am starting web design and decided to try my luck with a very complex website for my father's business. He teaches baseball, and so I'm trying to make a calendar. I finally got it looking exactly how I like using HTML Tables, so now I want to put dates into the calendar but don't want to delete the table since it took so long to perfect. So I (again) am starting web design and decided