Quick 'dirty. I just managed to process the trial version ( hacking Yahoo , but it's better if you want to revitalize growth / reduction):
<html>
<body>
<select style="width:100px;" onmouseover="this.style.width='auto'; this.focus();" onblur="this.style.width='100px';">
<option>Tiny</option>
<option>Und das verrry, verrrry, verrrrrrrrrrry long one!</option>
</select>
</body>
</html>
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