// JavaScript Document

//create the Cross-browser XMLHttpRequest object
function getFile(pURL) {
	if (window.XMLHttpRequest) { // code for Mozilla, Safari, etc 
		xmlhttp=new XMLHttpRequest();
		xmlhttp.onreadystatechange=postFileReady;
		xmlhttp.open("GET", pURL, true); // leave true for Gecko
		xmlhttp.send(null);
	} else if (window.ActiveXObject) { //IE 
		xmlhttp=new ActiveXObject('Microsoft.XMLHTTP'); 
		if (xmlhttp) {
			xmlhttp.onreadystatechange=postFileReady;
			xmlhttp.open('GET', pURL, false);
			xmlhttp.send();
		}
	} else {
		alert('Your browser does not support the remote scripting object.');
	}
}

// function to handle asynchronus call
function postFileReady() {
	if (xmlhttp.readyState==4) { 
		if (xmlhttp.status==200) { 
			//loadResults(xmlhttp.responseText);
			document.getElementById('moetext').innerHTML=xmlhttp.responseText;
		}
		else {
			document.getElementById('moetext').innerHTML="";
		}
	}
}

function setActiveStyleSheet(title) {
  var i, a, main;
  for (i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if (a.getAttribute("rel") &&
        a.getAttribute("rel").indexOf("style") != -1 &&
        a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}
var font_size = 1;
function largerfont() {
	if (font_size == 1) {
		setActiveStyleSheet('large1');
		font_size = 2;
	}
	else if (font_size == 2) {
		setActiveStyleSheet('large2');
		font_size = 3;
	}
	else if (font_size == 3) {
		setActiveStyleSheet('large3');
		font_size = 4;
	}
	else {
		setActiveStyleSheet('large4');
		font_size = 5;
	}
}
function smallerfont() {
	if (font_size == 5) {
		setActiveStyleSheet('large3');
		font_size = 4;
	}
	else if (font_size == 4) {
		setActiveStyleSheet('large2');
		font_size = 3;
	}
	else if (font_size == 3) {
		setActiveStyleSheet('large1');
		font_size = 2;
	}
	else {
		setActiveStyleSheet('normal');
		font_size = 1;
	}
}
var slidesize = 4;
function smallerimage() {
	if (slidesize == 4) {
		document.getElementById('moeslide').width = 720;
		document.getElementById('moeslide').height = 540;
		slidesize = 3;
	}
	else if (slidesize == 3) {
		document.getElementById('moeslide').width = 640;
		document.getElementById('moeslide').height = 480;
		slidesize = 2;
	}
	else  {
		document.getElementById('moeslide').width = 480;
		document.getElementById('moeslide').height = 360;
		slidesize = 1;
	}
}
function largerimage() {
	if (slidesize == 1) {
		document.getElementById('moeslide').width = 640;
		document.getElementById('moeslide').height = 480;
		slidesize = 2;
	}
	else if (slidesize == 2) {
		document.getElementById('moeslide').width = 720;
		document.getElementById('moeslide').height = 540;
		slidesize = 3;
	}
	else  {
		document.getElementById('moeslide').width = 960;
		document.getElementById('moeslide').height = 720;
		slidesize = 4;
	}
}


function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);
var num;
var totalnum;
function initnum()
{
	num = 1;
	totalnum = 72;
	document.getElementById('totalpages').innerHTML=totalnum;
}
function NextSlide()
{
	if(num >= totalnum)
		num = 1;
	else
		num = num+1;
	filename="Slide"+num+".JPG";
	filenametxt = "Slide"+num+".txt";
	document.getElementById('moeslide').src=filename;
	//document.moeslide.src=filename;
	document.getElementById('slidenumber').value = num;
	getFile(filenametxt);
	document.getElementById('currentpage').innerHTML=num;
}

function BackSlide()
{
	if(num <= 1)
		num = 1;
	else
		num = num-1;
	filename="Slide"+num+".JPG";
	filenametxt = "Slide"+num+".txt";
	document.getElementById('moeslide').src=filename;
	//document.moeslide.src=filename;
	document.getElementById('slidenumber').value = num;
	getFile(filenametxt);
	document.getElementById('currentpage').innerHTML=num;
}