/* Author: Mihai Bazon, September 2002
 * http://students.infoiasi.ro/~mishoo
 *
 * Table Of Content generator
 * Version: 0.4
 *
 * Feel free to use this script under the terms of the GNU General Public
 * License, as long as you do not remove or alter this notice.
 */

function H_getText(el) {
	var text="";
	for (var i=el.firstChild;i!=null;i=i.nextSibling) {
		if(i.nodeType==3) {
			text += i.data;
		} 
		else if (i.firstChild!=null) { 
			text+=H_getText(i);
		}
	}
	return text;
};

function getHeadlines(el) { 
	var l=new Array;
	var rx=/[hH]([1-6])/;
	var rec=function(el) { 
		for (var i=el.firstChild;i!=null;i=i.nextSibling) { 
			if (i.nodeType==1) { 
				if(rx.exec(i.tagName) && !/ignore/.test(i.className)) {
					l[l.length]= { element:i, text:H_getText(i), level:parseInt(RegExp.$1)};
				}
			rec(i);
			}
		}
	};
	rec(el);
	return l;
};

function generate_TOC(parent) { 
	var prefix="";
	if (parent.hasChildNodes() && parent.firstChild.nodeType==8) { 
		params=parent.firstChild.data;
		var rx=/base:(.*?)\s/;
		if(rx.exec(params)) 
			prefix=RegExp.$1;
	}
	var hs = getHeadlines(document.getElementsByTagName("body")[0]);
	for (var i=0;i<hs.length;++i) { 
		var hi=hs[i];
		var el=hi.element;
		if (hi.level<=2) { 
			var div=document.createElement("div");
			div.className="scrollTop"; 
			div.innerHTML="^ TOP ^";
			el.insertBefore(div,el.firstChild);
			div.className+=" pointer";
			div.title="Go to the top of the page";
			div.onclick=function() {
				scrollTo(0,0);
			};
			var oldColor;
			div.onmouseover=function() { 
				oldColor=this.style.color;
				this.style.color="#f84";
			};
			div.onmouseout=function() { 
				this.style.color=oldColor;
			};
		}
		var d=document.createElement("div");
		if (el.id=="") 
			el.id="gen"+i;
		var a = document.createElement("a");
		a.href = prefix+"#"+el.id;
		a.appendChild (document.createTextNode(hi.text));
		d.appendChild(a);
		d.className="level"+hi.level;
		parent.appendChild(d);
	}
};