Is there a method using either JavaScript or jQuery to determine what day of the week it is? For instance, if the date a user picks in the box is a Sunday, I can alert them.
today = new Date() dayIndex = today.getDay()
... will get you a numeric representation of "today".
0 = Sunday 1 = Monday 2 = Tuesday 3 = Wednesday 4 = Thursday 5 = Friday 6 = Saturday
If you need a lot of date handling, take a look at DateJS.