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document.domain = "example.org";
function $(str) {
return document.getElementById(str);
}
function hookLoad(str) {
$(str).onload = function () {
window.parent.parent.postMessage("end", "*");
};
window.parent.parent.postMessage("start", "*");
}
window.onload = function () {
hookLoad("w");
$("w").contentWindow.location.href = "test1.example.org.png";
hookLoad("x");
var doc = $("x").contentDocument;
doc.write('<img src="test1.example.org.png">');
doc.close();
};
function doIt() {
hookLoad("y");
$("y").contentWindow.location.href = "example.org.png";
hookLoad("z");
var doc = $("z").contentDocument;
doc.write('<img src="example.org.png">');
doc.close();
}
window.addEventListener("message", doIt);