function write_social_tags(){
  var files_base="http://app.ukasp.net/web/cpondemand/files/";
  document.getElementById("social_tags").innerHTML="Bookmark this page with:<br>"+
  "<a target='tags' title='Post this page to Facebook   ' href='http://www.facebook.com/sharer.php?u=" +location.href                          +"'><img src='"+files_base+"tag_facebook.gif'>Facebook</a><br>"+
  "<a target='tags' title='Post this page to Reddit     ' href='http://reddit.com/submit?url="         +location.href+"&title="+document.title +"'><img src='"+files_base+"tag_reddit.gif'  >Reddit</a><br>"+
  "<a target='tags' title='Post this page to Delicious  ' href='http://del.icio.us/post?url="          +location.href+"&title="+document.title +"'><img src='"+files_base+"tag_facebook.gif'>Delicious</a><br>"+
  "<a target='tags' title='Post this page to Stumbleupon' href='http://www.stumbleupon.com/submit?url="+location.href+"&title="+document.title +"'><img src='"+files_base+"tag_stumble.gif' >Stumbleupon</a><br>"+
  "<a target='tags' title='Post this page to Digg       ' href='http://digg.com/submit?url="           +location.href+"&title="+document.title +"'><img src='"+files_base+"tag_digg.gif'    >Digg</a>";
}