If you want to add Show Random Posts with Thumbnail Display into your blog, just follow the steps below.
1. Log in to your blogger account
2. Go to Design --> Page Elements --> Add Gadget
3. Then, add the code below
<style text-type="CSS">
img.label_thumb {
float:left;
padding:3px;
background:#CCC;
border:1px solid #A4A4A4;
width:100px;
height:75px;
margin-right:10px;
margin-top:10px }
img.label_thumb:hover {
opacity:0.8;
filter:alpha(opacity=80);
-moz-opacity:0.80;
-khtml-opacity:0.8 }
</style>
<script type='text/javascript'>
//<![CDATA[
function labelthumbs(json){document.write('<div>');for(var i=0;i<numposts;i++){var entry=json.feed.entry[i];var posttitle=entry.title.$t;var posturl;if(i==json.feed.entry.length)break;for(var k=0;k<entry.link.length;k++){if(entry.link[k].rel=='replies'&&entry.link[k].type=='text/html'){var commenttext=entry.link[k].title;var commenturl=entry.link[k].href;}
if(entry.link[k].rel=='alternate'){posturl=entry.link[k].href;break;}}
var thumburl;try{thumburl=entry.media$thumbnail.url;}catch(error)
{s=entry.content.$t;a=s.indexOf("<img");b=s.indexOf("src=\"",a);c=s.indexOf("\"",b+5);d=s.substr(b+5,c-b-5);if((a!=-1)&&(b!=-1)&&(c!=-1)&&(d!="")){thumburl=d;}
else thumburl='';}
document.write('<a href="'+posturl+'" title="'+posttitle+'"><img class="label_thumb" src="'+thumburl+'"/></a>');
if(i!=(numposts-1))
document.write('');}
document.write('</div>');}
//]]>
</script>
<script type='text/javascript'>var numposts = 4;</script>
<script type="text/javascript" src="/feeds/posts/default/-/Hacks?orderby=updated&alt=json-in-script&callback=labelthumbs"></script>
=> The Red code is the number of the post that you want to show
=> The green code is the name of the blog label (The alphabet must be same)
4. Then, click SAVE TEMPLATE
