Test Case Boilerplate
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HTML
<script src="http://code.jquery.com/ui/jquery-ui-git.js"></script>
<link rel="stylesheet" href="http://code.jquery.com/ui/jquery-ui-git.css">
<input id="birthday"/>
JavaScript
$("#birthday").datepicker($.datepicker.regional["ru"]);
$("#birthday").datepicker( "option", {
changeYear: true,
changeMonth: true
});