この方法を試して、コードを減らし、作業を増やしてください。
jQuery:
$(function(){
$('#red div').click(function(){//divs inside #red
var takeClass = (this).attr('class');//takes clicked element's class
//inside #blue div
$('#blue .'+takeClass).show();//show's div which got clicked element's class
// if clicked element's class is 'one', this will show '#blue .one'
});
});
あなたのhtml:
<div id="red">
<div class="one"></div>
<div class="two"></div>
<div class="three"></div>
</div>
<div id="blue">
<div id="sub" class="one"></div>
<div id="sub" class="two"></div>
<div id="sub" class="three"></div>
</div>