Many improvements.

third-party/mexui/Core/Control/WeekDay.js

@@ -0,0 +1,16 @@
+mexui.util.createControlConstructor('WeekDay', false, function(window, x, y, w, h, text, styles, callback)
+{
+	mexui.Control.TextInput.call(this, window, x, y, w, h, text, this.linkControlStyles('WeekDay', styles), callback, false, false);
+});
+mexui.util.extend(mexui.Control.WeekDay, mexui.Control.TextInput);
+
+// model
+mexui.Control.WeekDay.prototype.validateInputCallback = function(e, character)
+{
+	return mexui.util.isPositiveIntChar(character) || mexui.util.isLetter(character);
+};
+
+mexui.Control.WeekDay.prototype.validateValueCallback = function(e)
+{
+	return mexui.util.isWeekDayIdOrName(this.getText());
+};