<script><![CDATA[
		zk.afterLoad('zul.inp', function() {
			var xSpinner = {};
			zk.override(zul.inp.Spinner.prototype, xSpinner ,{
				_btnUp  : function() {
					//before
					var result = xSpinner._btnUp .apply(this, arguments);
					//after
					this._lastChg = this.valueBeforeMouseDown?this.valueBeforeMouseDown:this._value?this.value:0;
					var inputWidget = zul.inp.InputWidget;
					inputWidget._stopOnChanging(this);
					this.proxy(inputWidget._onChanging)();
					return result;
				},
				_btnDown  : function() {
					//before
					this.valueBeforeMouseDown = this._value;
					var result = xSpinner._btnDown .apply(this, arguments);
					//after
					return result;
				}
			});//zk.override
		});//zk.afterLoad
	]]></script>