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diff --git a/lib/dijit/form/_CheckBoxMixin.js.uncompressed.js b/lib/dijit/form/_CheckBoxMixin.js.uncompressed.js
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+++ b/lib/dijit/form/_CheckBoxMixin.js.uncompressed.js
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+define("dijit/form/_CheckBoxMixin", [
+	"dojo/_base/declare", // declare
+	"dojo/dom-attr", // domAttr.set
+	"dojo/_base/event" // event.stop
+], function(declare, domAttr, event){
+
+	// module:
+	//		dijit/form/_CheckBoxMixin
+
+	return declare("dijit.form._CheckBoxMixin", null, {
+		// summary:
+		//		Mixin to provide widget functionality corresponding to an HTML checkbox
+		//
+		// description:
+		//		User interacts with real html inputs.
+		//		On onclick (which occurs by mouse click, space-bar, or
+		//		using the arrow keys to switch the selected radio button),
+		//		we update the state of the checkbox/radio.
+		//
+
+		// type: [private] String
+		//		type attribute on `<input>` node.
+		//		Overrides `dijit/form/Button.type`.  Users should not change this value.
+		type: "checkbox",
+
+		// value: String
+		//		As an initialization parameter, equivalent to value field on normal checkbox
+		//		(if checked, the value is passed as the value when form is submitted).
+		value: "on",
+
+		// readOnly: Boolean
+		//		Should this widget respond to user input?
+		//		In markup, this is specified as "readOnly".
+		//		Similar to disabled except readOnly form values are submitted.
+		readOnly: false,
+		
+		// aria-pressed for toggle buttons, and aria-checked for checkboxes
+		_aria_attr: "aria-checked",
+
+		_setReadOnlyAttr: function(/*Boolean*/ value){
+			this._set("readOnly", value);
+			domAttr.set(this.focusNode, 'readOnly', value);
+		},
+
+		// Override dijit/form/Button._setLabelAttr() since we don't even have a containerNode.
+		// Normally users won't try to set label, except when CheckBox or RadioButton is the child of a dojox/layout/TabContainer
+		_setLabelAttr: undefined,
+
+		_getSubmitValue: function(/*String*/ value){
+			return !value && value !== 0 ? "on" : value;
+		},
+
+		_setValueAttr: function(newValue){
+			newValue = this._getSubmitValue(newValue);	// "on" to match browser native behavior when value unspecified
+			this._set("value", newValue);
+			domAttr.set(this.focusNode, "value", newValue);
+		},
+
+		reset: function(){
+			this.inherited(arguments);
+			// Handle unlikely event that the <input type=checkbox> value attribute has changed
+			this._set("value", this.params.value || "on");
+			domAttr.set(this.focusNode, 'value', this.value);
+		},
+
+		_onClick: function(/*Event*/ e){
+			// summary:
+			//		Internal function to handle click actions - need to check
+			//		readOnly, since button no longer does that check.
+			if(this.readOnly){
+				event.stop(e);
+				return false;
+			}
+			return this.inherited(arguments);
+		}
+	});
+});