<!DOCTYPE HTML> <html> <head> <style type="text/css"> .cell {display:table-cell} </style> <script type="text/javascript"> function doTest() { ss = document.styleSheets[0]; ss.cssRules[0].style.display="block"; } </script> </head> <body onload="doTest()"> <div class="cell">foo</div><div class="cell">bar</div><div class="cell">baz</div> </body> </html>