Judging by date, the date is the week ordinal of this month.

var Getmonthweek = function (A, B, c) {/ 
			* 
			a = d = Current date 
			b = 6-w = The current week is still a few days past (not today) 
			A + B and divided by 7 is the current month The week of the share 
			*/
			var date = new Date (A, parseint (b)-1, c), W = Date.getday (), d = date.getdate (); 
			Return Math.ceil ( 
			(d + 6-w)/7 
			); 
			};
			var Getyearweek = function (A, B, c) {/ 
			* 
			Date1 is the current date 
			Date2 is the first day of the year 
			D is the current date is the number of days 
			in D + The sum of the weeks of the first day of the current year divided by 7 is the week of the year 
			*/
			var date1 = new Date (A, parseint (b)-1, c), date2 = new Date (A, 0, 1), 
			d = Mat H.round ((date1.valueof ()-date2.valueof ())/86400000); 
			Return Math.ceil ( 
			(D + ((Date2.getday () + 1)-1)/7 
			); 
			/* today=new date ()//Get current time */
			var y = smonth[0];//year
			var m = smonth[1];//month
			var d = smonth[2];//day
			Aler T (Getmonthweek (Y, M, d));