The expanding content can be shown or hidden by clicking on the plus/minus icon or by pressing the "Show all" or "Hide all" button at run time.
How To Add The Expandable Recent Comments Widget to Blogger
Step 1. Log in to your Blogger dashboard and go to Layout > Click on "Add a Gadget" link
Step 2. From the pop-up window, scroll down and click on the HTML/JavaScript widget
Step 3. Copy and paste this code inside the empty box:
<style type="text/css" media="screen">
.row-aa { background: #f2f2f3; }
.row-bb { background: #F8F5F1; }
.row-div {
margin:0px;
padding:5px;
}
.comment-header {
font-size:0.9em;
// border:1px solid #E0E0E0;
// background-color:#F3F3F3;
padding:4px;
margin-top:10px;
margin-bottom:5px;
}
.comment-box {
margin:0px;
padding:0px;
font-size:0.9em;
height:500px;
overflow:auto;
}
.comments1 {
// background: #F3F3F3;
padding:3px;
border-left:1px dashed #A6A6A6;
color: #888888;
font-style: italic;
padding-top:4px;
margin-bottom:5px;
}
.comment-footer {
text-align:center;
font-size:0.9em;
padding:4px;
margin-top:5px;
}
</style>
<div style="text-align: center" class="comment-header"><input class="comment-button" id="commshowall" type="button" onclick="if (this.value == 'Show all') { unfold_all(this); this.value='Hide all'; } else { fold_all(this); this.value='Show all'; }" style="width:8em;font-size:1em;font-family:Verdana,sans" value="Show all" /></div>
<div class="comment-box">
<script type="text/javascript" src="http://helplogger.googlecode.com/svn/trunk/expandable-recent-comments.js"></script>
<script type="text/javascript" src="http://helplogger.blogspot.com/feeds/posts/default?start-index=1&max-results=999999&alt=json-in-script&callback=showrecentposts">
</script>
<script type="text/javascript" src="http://helplogger.blogspot.com/feeds/comments/default?start-index=1&max-results=999999&alt=json-in-script&callback=showrecentcomments">
</script>
</div>
Note: Replace http://helplogger.blogspot.com with your blog/site address.
Step 4. Save your widget and you're done!
Enjoy :)