Или даже так...
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-latest.js"></script>
<!--
<link rel="stylesheet" type="text/css" href="tmp.css" />
-->
<style type="text/css">
</style>
<script type="text/javascript">
$(document).ready(function(){
$('#div1').click(function(){
var f = $(this).css('font-family');
$('#font option[value="'+f+'"]').attr('selected',true);
});
});
</script>
</head>
<body>
<div id="div1" style="font-family:Arial">Текст</div>
<select id="font">
<option value="Verdana">Verdana</option>
<option value="Times New Roman">Times New Roman</option>
<option value="Courier">Courier</option>
<option value="Arial">Arial</option>
<option value="Tahoma">Tahoma</option>
<option value="Georgia">Georgia</option>
<option value="Comic Sans MS">Comic Sans MS</option>
</select>
</body>
</html>