var asvg = '<svgxmlns="http://www.w3.org/2000/svg"xmlns:xlink="http://www.w3.org/1999/xlink"><scriptxlink:href="data:text/javascript,"/><rectwidth="100"height="100"fill="green"><setattributeName="fill"attributeType="CSS"to="red"begin="0s"end="2s"dur="2s"fill="remove"/></rect></svg>';
function boom()
{
var f = document.createElementNS("http://www.w3.org/1999/xhtml", "iframe"); f.src = "data:text/html,1"; document.body.appendChild(f);
var w;
setTimeout(function() {
w = window.open("data:text/html,<bodyonload=window.close()>", "_blank", "width=200,height=200");
// Note that most of the code below will execute before the window appears, and in fact before "w" becomes non-null.