How can I place a html div over the Google Earth plugin Involves wmode, I imagine

document.getElementById('flashDiv').setAttribute('wmode', 'opaque');

<div id="parent">
  <div id="sibling"></div>
  <embed id=”flash”><other script code></embed>
</div>

//.parent may not need to be set to relative
#parent   { position: relative; }
// the value on sibling1 just needs to be higher than .sibling2
#sibling  { position: relative; z-index: 20; }
#flash    { position: relative; z-index: 10; display:inline }