Short URLs for Blogspot posts, using urltinyfy

<script type='text/javascript'>
// Shorten Blogger post URLs using urltinyfy javascript API, by MS-potilas 2012
// See http://yabtb.blogspot.com/2012/01/short-urls-for-blogspot-posts-and.html
//<![CDATA[
function loadscript(filename) {
  var scr=document.createElement('script');
  scr.setAttribute("type","text/javascript");
  scr.setAttribute("src",filename);
  document.getElementsByTagName("head")[0].appendChild(scr);
}
var waitElm=null;
function urltinyfyprompt_callback(response) {
  if(waitElm) waitElm.style.display="none";
  var txt="Short URL";
  if(response.title && response.title!="") txt+=' for "'+response.title+'"';
  else if(response.longurl && response.longurl!="") txt+=" for "+response.longurl;
  if(response.tinyurl && response.tinyurl!="")
    prompt(txt+":", response.tinyurl);
  else
    alert("Could not get short URL, try again later." + ((response.error && response.error != "") ? ("\nError: " + response.error) : ""));
}
function shortenUrl(elm, long_url, service) {
  waitElm=elm.parentNode.nextSibling;
  if(waitElm) waitElm.style.display="inline";
  loadscript("http://urltinyfy.appspot.com/"+service+"?unify=1&url="+encodeURIComponent(long_url) + "&callback=urltinyfyprompt_callback");
}
//]]>
</script>
<hr/><div class='post-footer-line post-footer-line-4'><span class='shorturls'>Short URLs:
<a expr:onclick='&quot;shortenUrl(this, &amp;#39;&quot; + data:post.url + &quot;&amp;#39;, &amp;#39;tinyurl&amp;#39;);return false;&quot;' href='javascript:void(0)' title='Click to get short URL'>tinyurl.com</a>,
<a expr:onclick='&quot;shortenUrl(this, &amp;#39;&quot; + data:post.url + &quot;&amp;#39;, &amp;#39;googl&amp;#39;);return false;&quot;' href='javascript:void(0)' title='Click to get short URL'>goo.gl</a>,
<a expr:onclick='&quot;shortenUrl(this, &amp;#39;&quot; + data:post.url + &quot;&amp;#39;, &amp;#39;safemn&amp;#39;);return false;&quot;' href='javascript:void(0)' title='Click to get short URL'>safe.mn</a>
</span><span style='display:none;'><img border='0' src='http://lh6.googleusercontent.com/-koQrbPdEZLs/TxGxRF18I6I/AAAAAAAAAlc/QQXjYtjd0Oc/s800/ajax-loader.gif' style='margin-top:-2px;margin-bottom:-5px;'/></span></div>