<!DOCTYPE HTML> <html class="reftest-wait"> <head> <script> function doTest() { var text = document.body.firstChild; // Insert a line, then make a change after it text.insertData(8, "Line 2\n"); text.replaceData(55, 1, "8"); document.documentElement.removeAttribute('class'); } document.addEventListener("MozReftestInvalidate", doTest); </script> </head> <body style="white-space:pre; padding: 2px; font-family: sans-serif;"> Line 1 Line 3 Line 4 Line 5 Line 6 Line 7 Line X Line 9 </body> </html>