Angular.js: Load CSS files per template

controller.js

$scope.$on('$viewContentLoaded', function() {
	$scope._style = document.createElement('link');
	$scope._style.type = 'text/css';
	$scope._style.href = 'application/Invoice/Resource/single.css';
	$scope._style.rel = 'stylesheet';

	$scope._style = document.head.appendChild($scope._style);
});

$scope.$on('$destroy', function() {
	$scope._style.parentNode.removeChild($scope._style);
	delete $scope._style;
});