<html> <head> <script> var counter = 0; function loadJSFile(){ var i = document.createElement('img') i.setAttribute("src", "resources/apple.jpg?counter=" + counter); counter++; document.getElementById("images").appendChild(i); } function runModal() { loadJSFile(); alert("Deferring loads"); } </script> </head> <body> <input id="button" type="button" value="click me" onclick="runModal()"/> <div id="images"></div> <p>Click the above button to start loading an image and then open an alert() box. For the test to pass there should be no crash when closing the alert box.</p> </body> </html>