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<html>
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<body>
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<textarea id="ta" rows=10 cols=40>Sample text</textarea>
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<script>
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var v = document.getElementById('ta');
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var w = v.offsetWidth; // Force a layout
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v.rows += 40; // Change the rows again.
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w = v.offsetWidth; // Force a layout again.
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</script>
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</body>
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</html>
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