在blogger中如何實現「相關文章」

<style>

#related-posts {
float : left;
width : 540px;
margin-top:20px;
margin-left : 5px;
margin-bottom:20px;
font : 11px Verdana;
margin-bottom:10px;
}
#related-posts .widget {
list-style-type : none;
margin : 5px 0 5px 0;
padding : 0;
}
#related-posts .widget h2, #related-posts h2 {
color : #333333;
font-size : 13px;
font-weight : normal;
margin : 5px 7px 0;
padding : 0 0 5px;
}
#related-posts a {
color : #054474;
font-size : 11px;
text-decoration : none;
}
#related-posts a:hover {
color : #054474;
text-decoration : none;
}
#related-posts ul {
border : medium none;
margin : 10px;
padding : 0;
}
#related-posts ul li {
display : block;
background : url("http://i263.photobucket.com/albums/ii150/mohamedrias/newconcept_bullet.png")
 no-repeat 0 0;
margin : 0;
padding-top : 0;
padding-right : 0;
padding-bottom : 1px;
padding-left : 16px;
margin-bottom : 5px;
line-height : 2em;
border-bottom:1px dotted #cccccc;
}

</style>

<script type='text/javascript'>
//<![CDATA[
var relatedTitles = new Array();
var relatedTitlesNum = 0;
var relatedUrls = new Array();
function related_results_labels(json) {
for (var i = 0; i < json.feed.entry.length; i++) {
var entry = json.feed.entry[i];
relatedTitles[relatedTitlesNum] = entry.title.$t;
for (var k = 0; k < entry.link.length; k++) {
if (entry.link[k].rel == 'alternate') {
relatedUrls[relatedTitlesNum] = entry.link[k].href;
relatedTitlesNum++;
break;
}
}
}
}
function removeRelatedDuplicates() {
var tmp = new Array(0);
var tmp2 = new Array(0);
for(var i = 0; i < relatedUrls.length; i++) {
if(!contains(tmp, relatedUrls[i])) {
tmp.length += 1;
tmp[tmp.length - 1] = relatedUrls[i];
tmp2.length += 1;
tmp2[tmp2.length - 1] = relatedTitles[i];
}
}
relatedTitles = tmp2;
relatedUrls = tmp;
}
function contains(a, e) {
for(var j = 0; j < a.length; j++) if (a[j]==e) return true;
return false;
}
function printRelatedLabels() {
var r = Math.floor((relatedTitles.length - 1) * Math.random());
var i = 0;
document.write('<ul>');
while (i < relatedTitles.length && i < 20) {
document.write('<li><a href=
"' + relatedUrls[r] + '">' + relatedTitles[r] + 
'</a></li>');
if (r < relatedTitles.length - 1) {
r++;
} else {
r = 0;
}
i++;
}
document.write('</ul>');
}
//]]>
</script>

<b:if cond='data:blog.pageType == "item"'>
<div id="related-posts">
<h2>Other Recommended Posts on <b:loop 
values='data:post.labels' 
var='label'><data:label.name/>
<b:if cond='data:label.isLast != 
&quot;true&quot;'>,</b:if>
<b:if cond='data:blog.pageType == 
&quot;item&quot;'>
<script expr:src=
'&quot;/feeds/posts/default/-/&quot; + data:label.name
 + &quot;?alt=json-in-script&amp;
callback=related_results_labels&amp;
max-results=5&quot;' type='text/javascript'/></b:if></b:loop> </h2>

<script type='text/javascript'>
 removeRelatedDuplicates(); printRelatedLabels(); </script>

</div></b:if>