// set the namespace
var XHTMLNS = 'http://www.w3.org/1999/xhtml';
var CURRENT_NICE_TITLE;
// browser sniff
var browser = new Browser();
// determine browser and version.
function Browser(){
	var ua, s, i;
	this.isIE = false;
	this.isNS = false;
	this.version = null;
	ua = navigator.userAgent;

	s = 'MSIE';
	if ((i = ua.indexOf(s)) >= 0){
		this.isIE = true;
		this.version = parseFloat(ua.substr(i + s.length));
		return;
	}

	s = 'Netscape6/';
	if ((i = ua.indexOf(s)) >= 0){
		this.isNS = true;
		this.version = parseFloat(ua.substr(i + s.length));
		return;
	}

	// treat any other 'Gecko' browser as NS 6.1.
	s = 'Gecko';
	if ((i = ua.indexOf(s)) >= 0){
		this.isNS = true;
		this.version = 6.1;
		return;
	}
}

// set delay vars to emulate normal hover delay
var delay;
var interval = 0.60;
// this function runs on window load
// it runs through all the links on the page as starts listening for actions
function makeNiceTitles(){
	if (!document.createElement || !document.getElementsByTagName) return;
	if (!document.createElementNS){
		document.createElementNS = function(ns, elt){
			return document.createElement(elt);
		}
	}
	// do regular links
	if (!document.links){
		document.links = document.getElementsByTagName('a');
	}
	for (var ti=0; ti<document.links.length; ti++){
		var lnk = document.links[ti];
		if (lnk.title){
			lnk.setAttribute('nicetitle', lnk.title);
			lnk.removeAttribute('title');
			addEvent(lnk, 'mouseover', showDelay);
			addEvent(lnk, 'mouseout', hideNiceTitle);
			addEvent(lnk, 'focus', showDelay);
			addEvent(lnk, 'blur', hideNiceTitle);
		}
	}
	// do ins and del tags
	var tags = new Array(2);
	tags[0] = document.getElementsByTagName('ins');
	tags[1] = document.getElementsByTagName('del');
	for (var tt=0; tt<tags.length; tt++){
		if (tags[tt]){
			for (var ti=0; ti<tags[tt].length; ti++){
				var tag = tags[tt][ti];
				if (tag.dateTime){
					var strDate = tag.dateTime;
					var month = strDate.substring(5,7);
					var day = strDate.substring(8,10);
					if (month[0] == '0'){
						month = month[1];
					}
					if (day[0] == '0'){
						day = day[1];
					}
					var dtIns = new Date(strDate.substring(0,4), month-1, day, strDate.substring(11,13), strDate.substring(14,16), strDate.substring(17,19));
					tag.setAttribute('nicetitle', (tt == 0 ? 'Added' : 'Deleted') + ' on ' + dtIns.toString());
					addEvent(tag, 'mouseover', showDelay);
					addEvent(tag, 'mouseout', hideNiceTitle);
					addEvent(tag, 'focus', showDelay);
					addEvent(tag, 'blur', hideNiceTitle);
				}
			}
		}
	}
}

// add an eventlistener to browsers that can do it somehow.
function addEvent(obj, evType, fn){
	if (obj.addEventListener){
		obj.addEventListener(evType, fn, true);
		return true;
	}else if (obj.attachEvent){
		var r = obj.attachEvent('on'+evType, fn);
		return r;
	}else{
		return false;
	}
}

function findPosition(oLink){
	if (oLink.offsetParent){
		for (var posX = 0, posY = 0; oLink.offsetParent; oLink = oLink.offsetParent){
			posX += oLink.offsetLeft;
			posY += oLink.offsetTop;
		}
		return [posX, posY];
	}else{
		return [oLink.x, oLink.y];
	}
}

function getParent(el, pTagName){
	if (el == null){
		return null;
	}else if (el.nodeType == 1 && el.tagName.toLowerCase() == pTagName.toLowerCase()){
		return el;
	}else{
		return getParent(el.parentNode, pTagName);
	}
}
// trailerpark wrapper function
function showDelay(e){
    if (window.event && window.event.srcElement){
        lnk = window.event.srcElement
	}else if (e && e.target){
        lnk = e.target
	}
    if (!lnk) return;
	// lnk is a textnode or an elementnode that's not ins/del
    if (lnk.nodeType == 3 || (lnk.nodeType == 1 && lnk.tagName.toLowerCase() != 'ins' && lnk.tagName.toLowerCase() != 'del')){
		// ascend parents until we hit a link
		lnk = getParent(lnk, 'a');
	}
	delay = setTimeout("showNiceTitle(lnk)", interval * 1000);
}

// build and show the nice titles
function showNiceTitle(link){
    if (CURRENT_NICE_TITLE) hideNiceTitle(CURRENT_NICE_TITLE);
    if (!document.getElementsByTagName) return;
    nicetitle = lnk.getAttribute('nicetitle');
	var d = document.createElementNS(XHTMLNS, 'div');
    d.className = 'nicetitle';
    tnt = document.createTextNode(nicetitle);
    pat = document.createElementNS(XHTMLNS, 'p');
    pat.className = 'titletext';
    pat.appendChild(tnt);

	// 2003-11-18 Dunstan Orchard
	// added in accesskey info
	if (lnk.accessKey){
        axs = document.createTextNode(' [' + lnk.accessKey + ']');
		axsk = document.createElementNS(XHTMLNS, 'span');
        axsk.className = 'accesskey';
        axsk.appendChild(axs);
		pat.appendChild(axsk);
	}
    d.appendChild(pat);

    if (lnk.href){
        tnd = document.createTextNode('');
        pad = document.createElementNS(XHTMLNS, 'p');
        pad.className = 'destination';
        pad.appendChild(tnd);
        d.appendChild(pad);
	}
    
    STD_WIDTH = 300;
	if (lnk.href){
        h = lnk.href.length;
	}else{
		h = nicetitle.length;
	}
	
    if (nicetitle.length){
		t = nicetitle.length;
	} 
	h_pixels = h*6;
	t_pixels = t*10;
    
    if (h_pixels > STD_WIDTH){
        w = h_pixels;
	}else if ((STD_WIDTH>t_pixels) && (t_pixels>h_pixels)){
        w = t_pixels;
	}else if ((STD_WIDTH>t_pixels) && (h_pixels>t_pixels)){
        w = h_pixels;
	}else{
        w = STD_WIDTH;
	}
   d.style.width = w + 'px';    
   mpos = findPosition(lnk);
   mx = mpos[0];
   my = mpos[1];
   d.style.left = (mx+15) + 'px';
   d.style.top = (my+35) + 'px';
   if (window.innerWidth && ((mx+w) > window.innerWidth)){
        d.style.left = (window.innerWidth - w - 25) + 'px';
   }
   if (document.body.scrollWidth && ((mx+w) > document.body.scrollWidth)){
        d.style.left = (document.body.scrollWidth - w - 25) + 'px';
   }
   
   document.getElementsByTagName('body')[0].appendChild(d);
   CURRENT_NICE_TITLE = d;
}

function hideNiceTitle(e){
	// clearTimeout 
	if (delay) clearTimeout(delay);
	if (!document.getElementsByTagName) return;
	if (CURRENT_NICE_TITLE){
		document.getElementsByTagName('body')[0].removeChild(CURRENT_NICE_TITLE);
		CURRENT_NICE_TITLE = null;
	}
}

window.onload = function(e) {
	makeNiceTitles();
	if(window.document.getElementById('horizontal'))
	Site.start();
		
}