// JavaScript Document

	// gradStudents.html
	function sortByProgram(profile1, profile2) {
		     var p1 = profile1.program;
			 var p2 = profile2.program;
			 return((p1 < p2) ? -1 : ((p1 > p2) ? 1 : sortByNthYear(profile1, profile2)));
		
	}
	
	function sortByNthYear(profile1, profile2) {
	         var y1 = profile1.nthYear;
			 var y2 = profile2.nthYear;
			 return((y1 < y2) ? -1 : ((y1 > y2) ? 1 : sortByLastFirst(profile1, profile2)));
	}
	
	// gradStudents.html, faculty.html, and facultyAlpha.html
	function sortByLastFirst(profile1, profile2) {
	         var ln1 = profile1.lastName.toLowerCase();
			 var ln2 = profile2.lastName.toLowerCase();
	         return((ln1 < ln2) ? -1 : ((ln1 > ln2) ? 1 : sortByFirstName(profile1, profile2)));  
	}
	function sortByFirstName(profile1, profile2) {
	         var fn1 = profile1.firstName.toLowerCase();
			 var fn2 = profile2.firstName.toLowerCase();
			 return((fn1 < fn2) ? -1 : ((fn1 > fn2) ? 1 : 0 )); 
	}
	
	
	// calendar.html
	
	function sortCalendar(cal1, cal2) {
		     var y1 = cal1.date.year;
		     var y2 = cal2.date.year;
		     return ((y1 < y2) ? -1 : ((y1 > y2) ? 1 : sortByMonth(cal1, cal2)));
	}
	
	function sortByMonth(cal1, cal2) {
		     var m1 = cal1.date.month;
		     var m2 = cal2.date.month;
		     return ((m1 < m2) ? -1 : ((m1 > m2) ? 1 : sortByDay(cal1, cal2)));
	}
	
	function sortByDay(cal1, cal2) {
		     var d1 = parseInt(cal1.date.day);
		     var d2 = parseInt(cal2.date.day);
		     return ((d1 < d2) ? -1 : ((d1 > d2) ? 1 : sortByTime(cal1, cal2)));
	}
	
	function sortByTime(cal1, cal2) {
		    var t1, h1, m1, ampm1, int1;
		    var t2, h2, m2, ampm2, int2;
		    
			     t1 = cal1.date.time;  // get one time string, e.g. "12:05 pm"
		        t2 = cal2.date.time;  // get another to compare
			 
			     h1 = parseInt(t1.split(":")[0]) * 100;  // e.g. converts hour in 12:05 to 1200
			     m1 = parseInt(t1.split(":")[1]); // e.g. converts minutes from 05 to 5
			     h2 = parseInt(t2.split(":")[0]) * 100;
			     m2 = parseInt(t2.split(":")[1]);
            int1 = h1 + m1; // gives time as integer value 1205
            int2 = h2 + m2;

			  ampm1 = t1.split(":")[1].split(" ")[1];  // first split gives mm pm, second split gives pm or am"
			  ampm2 = t1.split(":")[1].split(" ")[1];
			 			 
			 if (ampm1 == "pm" && (h1 != 1200)) { int1 += 1200; }
			 if (ampm2 == "pm") { int2 += 1200; }
			 
			 // alert("month: " + cal1.date.month + "\nt1: " + int1 + "\nt2: " + int2 + "\nsuffix 1: " + ampm1 + "\nsuffix 2: " + ampm2);
			 
		    return ((int1 < int2) ? -1 : ((int1 > int2) ? 1 : 0));
	}