<html xmlns="http://www.w3.org/1999/xhtml"> <head> <script> function boom() { document.getElementById("span").appendChild(document.createTextNode("XXX")); find("XXX"); } </script> </head> <body onload="boom();" style="width: 15em;"> <div style="-moz-column-count: 2;"> <span id="span"><div>yo yo yo yo yo yo yo yo</div></span> </div> </body> </html>