JQuery Replace Broken Image

Hi all, I tried to use javascript to replace broken image in my page, but its not working. Below is my code, 
$(document).ready(function loadPicture() { $('.display').text(''); //clean div display var ID = $("#lblTicketNo").text(); if (ID.length > 0) { var newImage = $('<img />'); newImage.attr('src', 'ReadImage.ashx?id=' + ID); // call handler with id $('.display').append(newImage); if (newImage.width == 0 ) { newImage.attr('src', 'NoImage.png'); $('.display').append(newImage); } } // preventDefault(); });