block-negative-2a-dyn2.html (492B)
1 <!DOCTYPE html> 2 <html class="reftest-wait"> 3 <head> 4 <style type="text/css"> 5 #a { 6 height: 20px; 7 background-color: green; 8 } 9 #b { 10 height: 20px; 11 background-color: blue; 12 margin-top: 0; 13 } 14 </style> 15 <script type="text/javascript"> 16 function test() { 17 document.getElementById('b').style.marginTop = '-20px'; 18 document.documentElement.removeAttribute('class'); 19 } 20 document.addEventListener('MozReftestInvalidate', test); 21 </script> 22 </head> 23 <body> 24 <div id="a"></div> 25 <div id="b"></div> 26 </body> 27 </html>