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Test Info:
<html>
<head>
<script>
try { o1 = window.getSelection() } catch (e) {}
try { o2 = document.createRange() } catch (e) {}
try { document.head.replaceWith('', document.documentElement) } catch (e) {}
try { o1.addRange(o2) } catch (e) {}
try { document.designMode = 'on' } catch (e) {}
try { o1.focusNode.execCommand('justifyleft', false, null) } catch (e) {}
</script>
</head>
</html>