// JavaScript Document
/*
Welcome to the CHOT:
Chris Holland Outline Toolbox
This is a work in progress

For more info:
frenchy@gmail.com
http://chrisholland.blogspot.com/

Copyright Chris Holland 2004-2005
Some rights reserved under a Creative Commons License:
Share-alike, with Attribution, do whatever you want with it beyond that :)
http://www.creativecommons.org/

====================================================================================
Modified script in accordance with to validate the standards of the W3C (Strict 1.0)
Flavio Theruo Kaminisse
http://www.japs.etc.br
http://creativecommons.org/licenses/by-nc-sa/2.0/br/deed.en
http://creativecommons.org/licenses/by-nc-sa/2.0/br/


*/

/* start basic stuff */

function isWithinNode(e,i,c,t,obj) {
	answer = false;
	te = e;
	while (te && !answer ) {
		if	( (te.id && (te.id == i)) || (te.className && (te.className == i+"Class"))
				|| (!t && c && te.className && (te.className == c))
				|| (!t && c && te.className && (te.className.indexOf(c) != -1))
				|| (t && te.tagName && (te.tagName.toLowerCase() == t))
				|| (obj && (te == obj))
			) {
			answer = te;
		} else {
			te = te.parentNode;
		}
	}
	return te;
}//isWithinNode

function getEvent(event) {
	return (event ? event : window.event);
}//getEvent()

function getEventElement(e) {
	return (e.srcElement ? e.srcElement: (e.target ? e.target : e.currentTarget));
}//getEventElement()

/* end basic stuff */

function handleClick(event) {
	e = getEvent(event);
	eL = getEventElement(e);
	if ( listItem = isWithinNode(eL,null,null,"li",null) ) {
		processListItem(listItem);
	}//if we clicked on a list item
}//handleClick

function processListItem(liObj,isInitMode) {
	childList = liObj.getElementsByTagName("ol");
	if ( !childList || (childList.length == 0) )
		childList = liObj.getElementsByTagName("ul");
	if ( childList )
		childList = childList[0];
	if ( childList) {
		currentDisplay = childList.style.display;
		if ( !currentDisplay || (currentDisplay == "block") ) {
			if ( isInitMode && !(childList.className == "compact") )
				showAsExpanded(liObj,childList);
			else
				showAsCompact(liObj,childList);
		} else {
			if ( isInitMode )
				showAsCompact(liObj,childList);
			else
				showAsExpanded(liObj,childList);
		}
	}
}//processListItem

function showAsCompact(liObj, childList) {
	childList.style.display = "none"
	childList.setAttribute("class","compact");
	//liObj.firstChild.className = "chot_compactHeader";
	setClass(liObj.firstChild,"chot_compactHeader");
	liObj.className="chot_compact";
	//setClass(liObj,"chot_compact");
}//showAsCompact

function showAsExpanded(liObj, childList) {
	childList.style.display = "block";
	childList.removeAttribute("class");
	//liObj.firstChild.className = "chot_expandedHeader";
	setClass(liObj.firstChild,"chot_expandedHeader");
	liObj.className = "chot_expanded";
	//setClass(liObj,"chot_expanded");
}//showAsExpanded

function setClass(o,v) {
	c = o.className;
	bc = new Array();
	var j=0;
	var i=0;
	if (c) {
		c = c.split(" ");
		for ( i = 0; c[i]; i++ ) {
			if ( c[i].indexOf("chot_") == -1 ) {
				bc[j] = c[i];
				j++;
			}
		}
		bc = bc.join(" ");
		o.className = bc + " " + v;
	}//class set on element
}//setClass

function initOutlines() {
	listItems = document.getElementsByTagName("li");
	for ( i = 0; listItems[i]; i++ ) {
		processListItem(listItems[i],true);
	}

}//initOutlines

if ( document.addEventListener ) {
	document.addEventListener("mouseup", handleClick, false);
	window.addEventListener("load", initOutlines, false);
} else {
	document.onmouseup = handleClick;
	window.onload = initOutlines;
}