Issue 644 - hasChanged uses strict comparisons so we need to ensure datatype

Author: trentrichardson

dist/jquery-ui-timepicker-addon.js

@@ -744,15 +744,22 @@
 				microsec = parseInt(microsec, 10);
 			}
 			if (timezone !== false) {
-				timezone = parseInt(timezone, 10);
+				timezone = timezone.toString();
 			}
 
 			var ampm = o[hour < 12 ? 'amNames' : 'pmNames'][0];
 
 			// If the update was done in the input field, the input field should not be updated.
 			// If the update was done using the sliders, update the input field.
-			var hasChanged = (hour !== this.hour || minute !== this.minute || second !== this.second || millisec !== this.millisec || microsec !== this.microsec || 
-					(this.ampm.length > 0 && (hour < 12) !== ($.inArray(this.ampm.toUpperCase(), this.amNames) !== -1)) || (this.timezone !== null && timezone !== this.timezone));
+			var hasChanged = (
+						hour !== parseInt(this.hour,10) || 
+						minute !== parseInt(this.minute,10) || 
+						second !== parseInt(this.second,10) || 
+						millisec !== parseInt(this.millisec,10) || 
+						microsec !== parseInt(this.microsec,10) || 
+						(this.ampm.length > 0 && (hour < 12) !== ($.inArray(this.ampm.toUpperCase(), this.amNames) !== -1)) || 
+						(this.timezone !== null && timezone !== this.timezone.toString()) 
+					);
 
 			if (hasChanged) {