Jquery selector help

I have the following html, how can i get to the <div class=“block”> so that i can put my ajax content inside it.

js


var index = 1;
$("h2.trigger").each(function () {
        $(this).next(".toggle_container").find("div:first").html(index);
 index++;
});

HTML


<h2 class="trigger"><a href="#">Heading One</a></h2>
<div class="toggle_container">
 <div class="block">
 
 </div>
</div>
 
 
<h2 class="trigger"><a href="#">Heading Two</a></h2>
<div class="toggle_container">
 <div class="block">
 
 </div>
</div>
 
<h2 class="trigger"><a href="#">Heading Three</a></h2>
<div class="toggle_container">
 <div class="block">
 
 </div>
</div>

Thanks

It is working, i had caching issues.

Thanks