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_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_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
doNavCheck();
  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];}
}

function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}

// Returns path with folder and file, else -1.
// ex. /folder/file.html
function getPath(thePath) {
	if (thePath == null) { return -1; }
	var startSlash = thePath.lastIndexOf("/");
	startSlash = thePath.lastIndexOf("/",startSlash -1);

	if (startSlash == -1) {
		return -1;
	} else {
		return thePath.substr(startSlash, thePath.length - startSlash);
	}
}

// Returns folder, else -1.
// ex. /folder/
function getCurrentFolder() {
	var thePath = getPath(location.href);
	if (thePath == null) { return -1; }
	var startSlash = thePath.lastIndexOf("/");
	startSlash2 = thePath.lastIndexOf("/",startSlash -1);

	if(startSlash == startSlash2) { return -1; }
	if (startSlash == -1 || startSlash2 == -1) {
		return -1;
	} else {
		return thePath.substr(startSlash2, startSlash - startSlash2 + 1);
	}
}

function doNavCheck() {
	switch (getCurrentFolder()){
		case "/home/":
			document.getElementById("home").src = "../../images/nav_home_over.gif";
			break;
		case "/about/":
			document.getElementById("about").src = "../../images/nav_about_over.gif";
			break;
		case "/events/":
			document.getElementById("events").src = "../../images/nav_calendar_over.gif";
			break;
		case "/poems/":
			document.getElementById("poems").src = "../../images/nav_poems_over.gif";
			break;
		case "/teachers/":
			document.getElementById("curriculum").src = "../../images/nav_curriculum_over.gif";
			break;
		case "/volunteer/":
			document.getElementById("volunteer").src = "../../images/nav_volunteer_over.gif";
			break;
	}
}

var standardStyle = '1'; 
var nameOfCookie = 'piyp_font_size'; 
var cssPath = '../../styles/';

var css1 = 'piyp.css';
var css2 = 'piyp_2.css';
var css3 = 'piyp_3.css';


function switchStyle(){
	var fontSize = GetCookie(nameOfCookie);
	if (fontSize == null) {
		fontSize = standardStyle;
	}

	if (fontSize == "1") { 
	document.write('<link rel="stylesheet" type"text/css" href="' + cssPath + ' ' + css1 + '">'); }
	
	if (fontSize == "2") { 
	document.write('<link rel="stylesheet" type"text/css" href="' + cssPath + css2 + '">'); }
	
	if (fontSize == "3") { 
	document.write('<link rel="stylesheet" type"text/css" href="' + cssPath + css3 + '">'); }
	
	var fontSize = "";
	return fontSize;
}

function getCookieVal (offset) {
	var endstr = document.cookie.indexOf (";", offset);
	if (endstr == -1)
	endstr = document.cookie.length;
	return unescape(document.cookie.substring(offset, endstr));
}

function GetCookie (name) {
	var arg = name + "=";
	var alen = arg.length;
	var clen = document.cookie.length;
	var i = 0;
	while (i < clen) {
		var j = i + alen;
		if (document.cookie.substring(i, j) == arg)
		return getCookieVal (j);
		i = document.cookie.indexOf(" ", i) + 1;
		if (i == 0) break;
	}
	return null;
}

function SetCookie (name, value) {
	document.cookie = name + "=" + escape (value) + '; path=/';
}

function DeleteCookie (name) {
	var exp = new Date();
	exp.setTime (exp.getTime() - 1);
	var cval = GetCookie (name);
	document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}


function doRefresh(){
	location.reload();
}

function init() {
	MM_preloadImages('images/nav_home_over.gif','images/nav_about_over.gif','images/nav_events_over.gif','images/nav_today_over.gif','images/nav_suggested_over.gif','images/nav_curriculum_over.gif','images/nav_poems_over.gif','images/nav_volunteer_over.gif','../../images/text_small_over.gif','../../images/text_medium_over.gif','../../images/text_large_over.gif','../../images/tool_printer_over.gif');
	doNavCheck();
}

switchStyle();