if(typeof Node == "undefined"){
	var Node = {};	
	Node.ELEMENT_NODE = Node.ELEMENT_NODE || 1;
	Node.TEXT_NODE = Node.TEXT_NODE || 3;
	Node.ATTRIBUTE_NODE = Node.ATTRIBUTE_NODE || 2;
	Node.COMMENT_NODE = Node.COMMENT_NODE || 8;
}

TOC = {
	/* Configuration Start */
	// container, which contains headlines
	// if not set or set to false, body will be taken
  container : "content",
  // top level headline
  headline : 2,
  // minimum number of top level headlines
  minNavPoints : 2, 
  // inserts TOC after an element with this id
  // if not set, TOC will be the first child of container
  insertAfter : "body",
  // headline of TOC
  headlineText : "Inhaltsverzeichnis",
  // this can be set to UL (unordered list) or OL (ordered lits)
  listType : "OL", 
  /* Configuration END */
  
  create : function(){
    try{
    	var container = false;
      if(this.container){
      	container = document.getElementById(this.container);
      }
      if(!container || container == null){
      	container = document.body;
      }

      var toInsertAfter = false;
      if(typeof this.insertAfter !== "undefined"){
      	toInsertAfter = document.getElementById(this.insertAfter);
      }
  		
  		var navPoints = this.lookupNavPoints(container, this.headline);
  		if(!navPoints){
  			return;
  		}
  		var div = document.createElement("div");
      div.id = "TOC";
      var o = document.createElement("p");
      o.className = "TOCHeadLine";
      o.innerHTML = this.headlineText;
      div.appendChild(o);
      
      if(toInsertAfter){
      	toInsertAfter.parentNode.insertBefore(div, toInsertAfter.nextSibling);
      } else {
      	container.insertBefore(div, container.firstChild);
      }

			var headlines = [];
			this.getHeadlines(navPoints[0], headlines);
      this.createToc(headlines, div);
      
    } catch(err){
    	;// do nothing
    }
  },
  
  lookupNavPoints: function(container, headlineOrder){
  	var navPoints = container.getElementsByTagName("H"+headlineOrder);
    if(navPoints.length < this.minNavPoints){
      return false;
    }
    return navPoints; 
  },
  
  isHeadline : function(node){
  	return (node.nodeName.indexOf("H") === 0 &&
  			!isNaN(parseInt(node.nodeName.replace("H", ""), 10))
  	);
  },
  
  getHeadlines : function(node, out){
  	while(node !== null ){
			if(node.nodeType === Node.ELEMENT_NODE && this.isHeadline(node)){
  			out.push(node);
			} 
			if( node.hasChildNodes() ){
				this.getHeadlines(node.firstChild, out);
			}
			node = node.nextSibling;	
		}
  },
  
  createToc : function(headlines, o){
  	
  	var list = document.createElement(this.listType);
  	o.appendChild(list);
  	var level = this.headline;
  	var li;
  	for(var i=0; i<headlines.length; ++i){
				var node = headlines[i];
				var tmp = parseInt(node.nodeName.replace("H", ""), 10);

				if(tmp > level){
					var o = document.createElement(this.listType);
					list.appendChild(li);
					li.appendChild(o);
					list = o;
					li = document.createElement("li");
					level = tmp;
				} else if(tmp < level){
					while(tmp < level || list.nodeName != this.listType){
						if( list.nodeName == this.listType){
							level--;
						}
						list = list.parentNode;
					}
	  			li = document.createElement("li");
				} else {
	  			li = document.createElement("li");
  			}
        var a = document.createElement("a");
        var id = node.id || ("hl"+i);
        node.setAttribute("id", id);
        a.setAttribute("href", "#" + node.id);
        a.innerHTML = node.innerHTML;
        li.appendChild(a);
        list.appendChild(li);	
			} 
	
  }
  
}

try {
  if( window.addEventListener ) {
    window.addEventListener("load", function(){TOC.create();}, false);
  } else if( window.attachEvent ) {
    window.attachEvent( "onload", function(){TOC.create();} );
  } 
} catch(e) {
  ;//do nothing
}