// JavaScript Document

var prefsLoaded = false;
var browser = navigator.appName;

var defaultFontSize =12;


var currentFontSize = defaultFontSize;

function revertStyles(){

	currentFontSize = defaultFontSize;
	changeFontSize(0);
	document.getElementById('left-nav-one').style.fontSize =  '12px';
	if(document.getElementById('contentheading'))
		document.getElementById('contentheading').style.fontSize = '12px';
	if(document.getElementById('contentheading2'))
		document.getElementById('contentheading2').style.fontSize = '12px';	
	if(document.getElementById('tex'))
		document.getElementById('tex').style.fontSize = '12px';
	if(document.getElementById('right'))
		document.getElementById('right').style.fontSize = '12px';
	
	//document.getElementById('extra').childNodes[0].style.fontSize = '100%';
	//document.getElementById('extra').childNodes[1].style.fontSize = '100%';
	//document.getElementById('style3').style.fontSize = '100%';
	if(document.getElementById('style3'))
	{
		document.getElementById('style3').style.fontSize = '12px';
	}

}

function changeFontSize(sizeDifference){
	
	currentFontSize = parseInt(currentFontSize) + parseInt(sizeDifference * 1);

	if(currentFontSize > 15){
		currentFontSize = 15;
	}else if(currentFontSize < 9){
		currentFontSize = 9;
	}

	setFontSize(currentFontSize);
};


function changeFontSizeComponent(sizeDifference){
	
	currentFontSize=12;
	currentFontSize = parseInt(currentFontSize) + parseInt(sizeDifference * 1);

	if(currentFontSize > 16){
		currentFontSize = 16;
	}else if(currentFontSize < 9){
		currentFontSize = 9;
	}

	setFontSize(currentFontSize);
};

function setFontSize(fontSize){
	//alert(fontSize);
	//fontSize = 12;
var stObj = (document.getElementById) ? document.getElementById('content_area') : document.all('content_area');
document.body.style.fontSize = fontSize + 'px';
document.getElementById('left-nav-one').style.fontSize = fontSize + 'px';
if(document.getElementById('contentheading'))
	document.getElementById('contentheading').style.fontSize = fontSize + 'px';
if(document.getElementById('contentheading2'))
	document.getElementById('contentheading2').style.fontSize = fontSize + 'px';
if(document.getElementById('tex'))
	document.getElementById('tex').style.fontSize = fontSize + 'px';
if(document.getElementById('right'))
	document.getElementById('right').style.fontSize = fontSize + 'px';

//document.getElementById('footer-nav').style.fontSize = (parseInt(fontSize)+2)+'px';
if(document.getElementById('style3'))
{
	document.getElementById('style3').style.fontSize = fontSize +'px';
}

	//alert (document.body.style.fontSize);
};

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
};

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
};

window.onload = setUserOptions;

function setUserOptions(){
	if(!prefsLoaded){

		cookie = readCookie("fontSize");
		currentFontSize = cookie ? cookie : defaultFontSize;
		setFontSize(currentFontSize);

		prefsLoaded = true;
	}

}

window.onunload = saveSettings;

function saveSettings()
{
	
  createCookie("fontSize", currentFontSize, 12);
}