dustin@782: 
dustin@782: // A new Prototype to return the Day of the Year.
dustin@782: // Taken from: http://javascript.about.com/library/bldayyear.htm
dustin@782: Date.prototype.getDOY = function() {
dustin@782:     var onejan = new Date(this.getFullYear(),0,1);
dustin@782:     return Math.ceil((this - onejan) / 86400000);
dustin@782: }