// JavaScript Document

function MM_showHideLayers() { //v6.0
var i,p,v,obj,args=MM_showHideLayers.arguments;
for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
obj.visibility=v; }
}


// resize fix for ns4
var origWidth, origHeight;
if (document.layers) {
	origWidth = window.innerWidth; origHeight = window.innerHeight;
	window.onresize = function() { if (window.innerWidth != origWidth || window.innerHeight != origHeight) history.go(0); }
}

var cur_lyr;	// holds id of currently visible layer
function swapLayers(id) {
  if (cur_lyr) hideLayer(cur_lyr);
  showLayer(id);
  cur_lyr = id;
}

function showLayer(id) {
  var lyr = getElemRefs(id);
  if (lyr && lyr.css) lyr.css.visibility = "visible";
}

function hideLayer(id) {
  var lyr = getElemRefs(id);
  if (lyr && lyr.css) lyr.css.visibility = "hidden";
}

function getElemRefs(id) {
	var el = (document.getElementById)? document.getElementById(id): (document.all)? document.all[id]: (document.layers)? getLyrRef(id,document): null;
	if (el) el.css = (el.style)? el.style: el;
	return el;
}

// get reference to nested layer for ns4
// from old dhtmllib.js by Mike Hall of www.brainjar.com
function getLyrRef(lyr,doc) {
	if (document.layers) {
		var theLyr;
		for (var i=0; i<doc.layers.length; i++) {
	  	theLyr = doc.layers[i];
			if (theLyr.name == lyr) return theLyr;
			else if (theLyr.document.layers.length > 0) 
	    	if ((theLyr = getLyrRef(lyr,theLyr.document)) != null)
					return theLyr;
	  }
		return null;
  }
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

// show hide layers
function MM_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}
//show hide layers END


// numbers
userAgent = window.navigator.userAgent;
browserVers = parseInt(userAgent.charAt(userAgent.indexOf("/")+1),10);
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function findElement(n,ly) {
	if (browserVers < 4)		return document[n];
	var curDoc = ly ? ly.document : document;
	var elem = curDoc[n];
	if (!elem) {
		for (var i=0;i<curDoc.layers.length;i++) {
			elem = findElement(n,curDoc.layers[i]);
			if (elem) return elem;
		}
	}
	return elem;
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		var img;
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			img = null;
			if (document.layers) {
				img = findElement(changeImages.arguments[i],0);
			}
			else {
				img = document.images[changeImages.arguments[i]];
			}
			if (img) {
				img.src = changeImages.arguments[i+1];
			}
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		id01_over = newImage("../img/numbers/01-over.gif");
		id02_over = newImage("../img/numbers/02-over.gif");
		id03_over = newImage("../img/numbers/03-over.gif");
		id04_over = newImage("../img/numbers/04-over.gif");
		id05_over = newImage("../img/numbers/05-over.gif");
		id06_over = newImage("../img/numbers/06-over.gif");
		id07_over = newImage("../img/numbers/07-over.gif");
		id08_over = newImage("../img/numbers/08-over.gif");
		id09_over = newImage("../img/numbers/09-over.gif");
		id10_over = newImage("../img/numbers/10-over.gif");
		id11_over = newImage("../img/numbers/11-over.gif");
		id12_over = newImage("../img/numbers/12-over.gif");
		id13_over = newImage("../img/numbers/13-over.gif");
		id14_over = newImage("../img/numbers/14-over.gif");
		id15_over = newImage("../img/numbers/15-over.gif");
		id16_over = newImage("../img/numbers/16-over.gif");
		id17_over = newImage("../img/numbers/17-over.gif");
		id18_over = newImage("../img/numbers/18-over.gif");
		id19_over = newImage("../img/numbers/19-over.gif");
		id20_over = newImage("../img/numbers/20-over.gif");
		id21_over = newImage("../img/numbers/21-over.gif");
		id22_over = newImage("../img/numbers/22-over.gif");
		id23_over = newImage("../img/numbers/23-over.gif");
		id24_over = newImage("../img/numbers/24-over.gif");
		id25_over = newImage("../img/numbers/25-over.gif");
		id26_over = newImage("../img/numbers/26-over.gif");
		id27_over = newImage("../img/numbers/27-over.gif");
		id28_over = newImage("../img/numbers/28-over.gif");
		id29_over = newImage("../img/numbers/29-over.gif");
		id30_over = newImage("../img/numbers/30-over.gif");
		preloadFlag = true;
	}
}
// numbers END

// Navigation
sfHover = function() {	
	var sfEls = document.getElementById("navigation_left").getElementsByTagName("dd");
	for (var i=0; i<sfEls.length; i++) {
			sfEls[i].getElementsByTagName("A")[0].stateCaller = sfEls[i];
	
			// get the element inner html
			var tmpStr = new String(sfEls[i].innerHTML);
				
			tmpStr = tmpStr.toLowerCase();
			// check that a list exists
	
			if (tmpStr.indexOf("<ul>") != -1){
				// there is a ul so change the tag to expand the menu
				sfEls[i].getElementsByTagName("A")[0].href = "javascript:;";
			}
	
			sfEls[i].getElementsByTagName("A")[0].onmousedown = function(){
				// get the element
				state = this.stateCaller;
				
				if(state.className != "over"){
					state.className="over";
				} else {
					state.className="under";
				}
			}
		}
}
// Navigation END