$(document).ready(function()
{
    //select top menu link based on page name loaded
    var isEmptyUrl = document.location.href.length > 0 && document.location.href.charAt(document.location.href.length - 1) == '/';
    var links = $('#nav > ul > li > a');
    for (var i = 0; i < links.length; i++)
    {
        var link = file_name_only(links[i].href);
        if (link.indexOf(file_name_only(document.location.href)) > -1 || (isEmptyUrl && link == "default"))
        {
            links[i].setAttribute('class', 'selected');
            break;
        }
    }

    links = $('#nav > ul > li');
    for (var i = 0; i < links.length; i++)
    {
        links[i].setAttribute("onmouseover", "this.className==''?this.className='nav_hover':this.className+=' nav_hover';");
        links[i].setAttribute("onmouseout", "this.className.indexOf('sperator')>=0?this.className='sperator':this.className='';");
    }

    //mark external links
    $('a.external').attr('title', 'External Link (open in a new window)');
    $('a.external').attr('target', '_blank');

    $('a.external-white').attr('title', 'External Link (open in a new window)');
    $('a.external-white').attr('target', '_blank');

    $('div.back2top > a').click(function(){$.scrollTo({ top: 0, left: 0 }, 1500)});
});

  function file_name_only(str)
  {
    try
    {
      return str.substring(str.lastIndexOf('/') + 1, str.lastIndexOf('.'))
    }
    catch (e)
    {
      return "";
    }
  }