function toggleVisibility(id)
{
	var x = document.getElementById(id);
	
	if (x.style.visibility === "visible")
	{
    x.style.visibility = "hidden";
    x.style.display = "none";
	}
	else
	{
    x.style.visibility = "visible";
    if (id.startsWith("table"))
    {
      x.style.display = "inline-table";
    }
    else
    {
      x.style.display = "block";
    }
	}
  return false;
}

function toggleIFrameVisibility(id)
{
  var x = document.getElementById(id);

	if (x.style.visibility === "visible")
	{
    x.style.visibility = "hidden";
    x.style.display = "none";
	}
	else
	{
    x.style.visibility = "visible";
    x.style.display = "block";
	}
  return false;
}

var scrolltotop={setting:{startline:100,scrollto:0,scrollduration:1e3,fadeduration:[500,100]},controlHTML:'<img src="data:application/postscript;base64,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"/>',controlattrs:{offsetx:5,offsety:5},anchorkeyword:"#top",state:{isvisible:!1,shouldvisible:!1},scrollup:function(){this.cssfixedsupport||this.$control.css({opacity:0});var t=isNaN(this.setting.scrollto)?this.setting.scrollto:parseInt(this.setting.scrollto);t="string"==typeof t&&1==jQuery("#"+t).length?jQuery("#"+t).offset().top:0,this.$body.animate({scrollTop:t},this.setting.scrollduration)},keepfixed:function(){var t=jQuery(window),o=t.scrollLeft()+t.width()-this.$control.width()-this.controlattrs.offsetx,s=t.scrollTop()+t.height()-this.$control.height()-this.controlattrs.offsety;this.$control.css({left:o+"px",top:s+"px"})},togglecontrol:function(){var t=jQuery(window).scrollTop();this.cssfixedsupport||this.keepfixed(),this.state.shouldvisible=t>=this.setting.startline?!0:!1,this.state.shouldvisible&&!this.state.isvisible?(this.$control.stop().animate({opacity:1},this.setting.fadeduration[0]),this.state.isvisible=!0):0==this.state.shouldvisible&&this.state.isvisible&&(this.$control.stop().animate({opacity:0},this.setting.fadeduration[1]),this.state.isvisible=!1)},init:function(){jQuery(document).ready(function(t){var o=scrolltotop,s=document.all;o.cssfixedsupport=!s||s&&"CSS1Compat"==document.compatMode&&window.XMLHttpRequest,o.$body=t(window.opera?"CSS1Compat"==document.compatMode?"html":"body":"html,body"),o.$control=t('<div id="topcontrol">'+o.controlHTML+"</div>").css({position:o.cssfixedsupport?"fixed":"absolute",bottom:o.controlattrs.offsety,right:o.controlattrs.offsetx,opacity:0,cursor:"pointer"}).attr({title:"Scroll to Top"}).click(function(){return o.scrollup(),!1}).appendTo("body"),document.all&&!window.XMLHttpRequest&&""!=o.$control.text()&&o.$control.css({width:o.$control.width()}),o.togglecontrol(),t('a[href="'+o.anchorkeyword+'"]').click(function(){return o.scrollup(),!1}),t(window).bind("scroll resize",function(t){o.togglecontrol()})})}};scrolltotop.init();

function mangle(id)
{
  return id.replace(/(\s|[.])/g,"-");
}

$(document).ready(function(){
  var ToC = "<nav role='navigation' class='table-of-contents'>" +
      "<h2>Contents:</h2>" +
      "<ul>";
  var el, title, link, headerID;
  $("h2, h3").each(function() {
    el = $(this);
    headerID = el.attr("id");
    if (typeof headerID == 'undefined')
    {
      headerID = mangle(el.text());
    }
    el.attr("id", headerID);

    title = el.text();
    link = "#" + el.attr("id");

    newLine = "<li>" + "<a href='" + link + "'>" + title + "</a>" + "</li>";

    ToC += newLine;

  });
  ToC += "</ul>" + "</nav>";
//  $("#chapter").prepend(ToC);
  $("#toc").replaceWith(ToC);
});