// JavaScript Document
        Calendar.setup({
        inputField            :   "ReturnDate",     // id of the input field
        ifFormat              :   "%Y-%m-%d",      // format of the input field
        daFormat       :   "%A, %e %B %Y",
        displayArea           :   "ReturnDate_e",       // ID of the span where the date is to be shown
        button                :   "ReturnDate_b",  // trigger for the calendar (button ID)
        align                 :   "B1",           // alignment (defaults to "Bl")
        showOthers       :   true,
        singleClick           :   true
        });