$(document).ready(function() {
	$('img').error(function() {
		var regex = new RegExp('img-check-(\\d{1,}x(\\d{1,})*)', 'i'),
		    chk =$(this).attr('class');
		if(regex.test(chk)) {
			$(this).attr('src', '/assets/image/' + regex.exec(chk)[1] +'/imagine-indisponibila.jpg');
		}
	});
});