onDeregistrationButton : function() {
		var subunitField = this.lookup('subunitField'),
			commonPdnDescription = this.lookup('cntrCitizenRegistrationInfo'),
			deregistrationBlockPosition = commonPdnDescription.items.indexOf(subunitField),
			pdnDeregistration = this.lookup('pdnDeregistration'),
			juvCase = this.getViewModel().get('juvCase');

		if (!pdnDeregistration) {
			this.lookup('deregistrationButton').setText('Отменить снятие');
			commonPdnDescription.insert(deregistrationBlockPosition, this.getView().createDeregistrationBlock(this.isRegistrationParent()));
			juvCase.set('deregistrationDate', null);
			juvCase.set('deregistrationCauseId', null);
		}
		else {
			this.lookup('deregistrationButton').setText('Снять с учета');
			commonPdnDescription.remove(pdnDeregistration);
			juvCase.set('deregistrationDate', null);
			juvCase.set('deregistrationCauseId', null);
		}
	},