collapse expand part 1

<script src='http://code.jquery.com/jquery-latest.js' type='text/javascript'></script>
<b:if cond='data:blog.pageType == &quot;item&quot;'>
<script type='text/javascript'>
//<![CDATA[
if(typeof jQuery != 'undefined') {
  $(function() {
    $('a.smoothvscroll').bind('click',function(event){
      var $anchor = $(this);
      $('html, body').stop().animate({
        scrollTop: $($anchor.attr('href')).offset().top
      }, "slow");
      event.preventDefault();
    });
  });
}
// functions for show/hide comments
function showhideElm(ele, showhide) {
  if(!ele) return;
  if(showhide == "toggle") {
    if(typeof jQuery == 'undefined')
    {
      if(ele.style.display != "none")
        ele.style.display = "none";
      else
        ele.style.display = "block";
    }
    else
      $(ele).slideToggle();
  }
  else if(showhide == "hide")
  {
    if(typeof jQuery == 'undefined')
      ele.style.display = "none";
    else
      $(ele).slideUp("slow");
  }
  else if(showhide == "show")
  {
    if(typeof jQuery == 'undefined')
      ele.style.display = "block";
    else
      $(ele).slideDown("slow");
  }
}
function toggleComment(event, elm)
{
  var txt='';
  if (window.getSelection)
    txt = window.getSelection();
  else if (document.getSelection)
    txt = document.getSelection();
  else if (document.selection)
    txt = document.selection.createRange().text;
  var target = event.target ? event.target : event.srcElement;
  if (target.nodeType != 1)
    target = target.parentNode;
  if (target.nodeName.toLowerCase() == 'a' || target.nodeName.toLowerCase() == 'img' || txt != '')
    return;
  elm=getCommentBodyElm(elm);
  showhideElm(elm, "toggle");
}
function getCommentBodyElm(elm)
{
  if(elm.className=="admin-comment" || elm.className=="normal-comment")
    elm=elm.firstChild;
  while(elm && (elm.nodeType != 1 || (elm.className != "comment-body" && elm.className != "comment-body-author")))
    elm = elm.nextSibling;
  return elm;
}
function showhideComments(showhide)
{
  var elements = document.getElementsByTagName("*");
  for(var i=0 ; i<elements.length ; i++)
    if(elements[i].className=="normal-comment" || elements[i].className=="admin-comment")
      showhideElm(getCommentBodyElm(elements[i]), showhide);
}
function showComments()
{
  showhideComments("show");
  return true;
}
function hideComments()
{
  showhideComments("hide");
  return true;
}
//]]>
</script>
</b:if>