Label list and up-down

<div style="overflow:auto;width:100%;height:300px;padding:10px;border:1px solid #000000">
<span id="pbl_labels"></span>
<div id="pbl_posts"> Recent Posts </div>
<script type="text/javascript">
var jumlah_maksimum_post = 10;
var dengan_ringkasan = true;
var jumlah_karakter_ringkasan = 100;
</script>

<script type="text/javascript">
//<![CDATA[
var num=jumlah_maksimum_post;var wsumm=dengan_ringkasan;var summlen=jumlah_karakter_ringkasan;var json;var labels;function entryHasLabel(entry,label){if(label=="*"){return true}var labels=getPostLabels(entry);return isExists(labels,label)}function getAllLabels(json){var labels=[];var entries=json.feed.entry;for(var i=0;i<entries.length;i++){var entry=entries[i];var categories=entry.category;if(!categories){continue}for(var j=0;j<categories.length;j++){var category=categories[j];var label=category.term;if(!isExists(labels,label)){labels.push(label)}}}labels.sort();return labels}function getContent(entry){if(!wsumm){return""}var content=entry.content?entry.content.$t:entry.summary.$t;content=stripHTML(content);if(content.length<=summlen){return content}content=content.substr(0,summlen);if(content.charAt(content.length-1)!=" "){content=content.substr(0,content.lastIndexOf(" ")+1)}content+="...";return content}function getPermalink(entry){var links=entry.link;if(!links){return null}for(var i=0;i<links.length;i++){var link=links[i];if(link.rel=="alternate"){return link.href}}return null}function getPostLabels(entry){var labels=[];var categories=entry.category;if(!categories){return labels}for(var i=0;i<categories.length;i++){labels.push(categories[i].term)}return labels}function getRecentPosts(json,label){var posts=[];var entries=json.feed.entry;var i=0;while(posts.length<num){if(i==entries.length){break}var entry=entries[i];if(entryHasLabel(entry,label)){var title=entry.title.$t;var href=getPermalink(entry);var content=getContent(entry);var post={"title":title,"href":href,"content":content};posts.push(post)}i++}return posts}function isExists(array,val){for(var i=0;i<array.length;i++){if(array[i]==val){return true}}return false}function onLoadFeed(json_arg){json=json_arg;labels=getAllLabels(json);showLabels(labels);showLabeledPosts("*")}function showLabeledPosts(label){posts=getRecentPosts(json,label);showPosts(posts)}function showLabels(labels){var s="";s+="<select onchange='showLabeledPosts(this.value)'>";s+="<option value='*'/>All Labels";for(var i=0;i<labels.length;i++){var label=labels[i];s+="<option value='"+label+"'/>"+label}s+="</select>";document.getElementById("pbl_labels").innerHTML=s}function showPosts(posts){var s="";if(!wsumm){s+="<ul>"}for(var i=0;i<posts.length;i++){var post=posts[i];if(wsumm){s+="<p>";s+="<b><a href='"+post.href+"'>"+post.title+"</a></b> <br/>";s+=post.content;s+="<br/><a href='"+post.href+"'> continue&gt;&gt; </a>";s+="</p>"}else{s+="<li><a href='"+post.href+"'>"+post.title+"</a></li>"}}if(!wsumm){s+="</ul>"}document.getElementById("pbl_posts").innerHTML=s}function stripHTML(s){var c;var intag=false;var newstr="";for(var i=0;i<s.length;i++){c=s.charAt(i);if(c=="<"){intag=true}else if(c==">"){intag=false}if(c==">"){newstr+=" "}else if(!intag){newstr+=c}}return newstr}
//]]>
</script>
<script src="http://www.searchtools.top/feeds/posts/default?alt=json-in-script&callback=onLoadFeed">
</script></div>