Как вариант...
<!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 (){
$('#b1').click(function (){
$('a.five[onclick='+"javascript:JVXVote(2267,5,225,54,'x',1);"+']').click();
});
$('#b2').click(function (){
$(':hidden[name="cid"][value="2266"]').parent().parent().parent().get(0).submit();
});
});
function JVXVote() {
alert('Go!');
};
</script>
</head>
<body>
<div class="item ">
<div class="item-bg">
<div class="extravote-container">
<ul class="extravote-stars">
<li id="2266" class="current-rating"></li>
<li><a href="javascript:void(null)" onclick="javascript:JVXVote(2267,1,225,54,'x',1);" class="one">1</a></li>
<li><a href="javascript:void(null)" onclick="javascript:JVXVote(2267,2,225,54,'x',1);" class="two">2</a></li>
<li><a href="javascript:void(null)" onclick="javascript:JVXVote(2267,3,225,54,'x',1);" class="three">3</a></li>
<li><a href="javascript:void(null)" onclick="javascript:JVXVote(2267,4,225,54,'x',1);" class="four">4</a></li>
<li><a href="javascript:void(null)" onclick="javascript:JVXVote(2267,5,225,54,'x',1);" class="five">5</a></li>
</ul>
</div>
</div>
<span id="extravote_2267_x" class="extravote-count"><small>( 54 Votes )</small></span>
<form method="post" action="">
<span class="content_rating">
<span class="content_vote">
Худший<input type="radio" alt="vote 1 star" name="user_rating" value="1" />
<input type="radio" alt="vote 2 star" name="user_rating" value="2" />
<input type="radio" alt="vote 3 star" name="user_rating" value="3" />
<input type="radio" alt="vote 4 star" name="user_rating" value="4" />
<input type="radio" alt="vote 5 star" name="user_rating" value="5" checked="checked" />Лучший
<input class="button" type="submit" name="submit_vote" value="Рейтинг" />
<input type="hidden" name="task" value="vote" />
<input type="hidden" name="option" value="com_content" />
<input type="hidden" name="cid" value="2266" />
<input type="hidden" name="url" value="..." />
</span>
</span>
</form>
</div>
<button id='b1'>Кликнуть ссылку</button>
<button id='b2'>Отправить форму</button>
</body>
</html>