<!DOCTYPE html> <html class="reftest-wait"> <head> <style> label {color: red} object[data*="solidblue"]:not(:-moz-broken) + label {color: green} object, img { display: none } </style> </head> <body onload='var i1 = document.getElementById("ffximage"); i1.onload = function() { document.documentElement.className = ""; }; i1.setAttribute("data", "solidblue.png");'> <img src="solidblue.png"> <object type="image/png" data="no-such-scheme:nothing" id="ffximage"></object> <label for="ffximage">Text should be green</label> </body> </html>