| <!DOCTYPE html> | |
| <body> | |
| <iframe id="testFrame"></iframe> | |
| <script> | |
| document.getElementById('testFrame').contentDocument.body.innerHTML = "<div id='testElement' style='display: none'>TEST</div>" | |
| setInterval(function() { | |
| // Change the style of a display:none element. | |
| var testFrame = document.getElementById("testFrame"); | |
| var testElement = testFrame.contentDocument.getElementById("testElement"); | |
| testElement.style["left"] = "" + Math.floor((Math.random() * 10) + 1) + "px"; | |
| }, 0); | |
| </script> | |
| </body> |