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<!DOCTYPE html>
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<script>
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try {
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var selectElem = document.createElementNS("http://www.w3.org/1999/xhtml", "select");
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selectElem.QueryInterface(Components.interfaces.nsISelectElement);
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selectElem.getOptionIndex(null, 0, true);
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} catch (e) {
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}
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</script>
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