Displaying the first day of the week in CoolSigns content

The following javascript can be used to display the first day of the current week in content created for CoolSigns.

var d = new Date();
var day = d.getDay();
var diff = d.getDate() - day + (day == 0 ? -6:1);
var monday = new Date(d.setDate(diff));

var month = monday.getMonth() == 0 ? "January":
monday.getMonth() == 1 ? "February":
monday.getMonth() == 2 ? "March":
monday.getMonth() == 3 ? "April":
monday.getMonth() == 4 ? "May":
monday.getMonth() == 5 ? "June":
monday.getMonth() == 6 ? "July":
monday.getMonth() == 7 ? "August":
monday.getMonth() == 8 ? "September":
monday.getMonth() == 9 ? "October":
monday.getMonth() == 10 ? "November":"December";

return month + " " + monday.getDate() + ", " + monday.getYear();