<a href='#' class='show-some'>
Show 1
<div class='block'>Block</div>
</a><br>
<a href='#' class='show-some'>
Show 2
<div class='block'>Block</div>
</a><br>
<a href='#' class='show-some'>
Show 3
<div class='block'>Block</div>
</a><br>
$(".show-some").click(function(){
$(this).children(".block").html("Changed");
});
This Pen doesn't use any external CSS resources.