<html xmlns="http://www.w3.org/1999/xhtml"> <head> <style> body { -moz-column-count: 2; -moz-column-width: 100px; height: 200px; } #b { float: left; height: 300px; } .og:before { display: block; content: "foo"; } </style> </head> <body onload="document.getElementById('span').style.display = 'block';"> <img src="../../../testing/crashtest/images/tree.gif" width="1070" height="335" id="b"/> <div class="og"><span id="span"></span></div> </body> </html>