title="Testcase bug 356325 - Crash [@ nsCSSFrameConstructor::FindFrameWithContent] with tooltip, mathml:and and moving stuff in it">

<description value="This page should not crash Mozilla"/>

<box id="y">

  <box id="d"/>

</box>

<tooltip>

  <mathml:and id="x"/>

</tooltip>

<html:script>

function doe() {

document.getElementById('x').appendChild(document.getElementById('y'));

document.getElementById('y').appendChild(document.getElementById('d'));

}

window.onload=doe;

</html:script>

</window>