var prefsLoaded = false;
var defaultFontSize = 100;
var currentFontSize = defaultFontSize;

function revertStyles(){
	currentFontSize = defaultFontSize;
	changeFontSize(0);
}

function toggleColors(){
	if(currentStyle == "White"){
		setColor("Black");
	}
	else{
		setColor("White");
	}
}
function changeFontSize(sizeDifference){
	currentFontSize = parseInt(currentFontSize) + parseInt(sizeDifference * fontIncrement);
	if(currentFontSize > max_Size){
		currentFontSize = max_Size;
	}
	else if(currentFontSize < min_Size){
		currentFontSize = min_Size;
	}
	setFontSize(currentFontSize);
};
function setFontSize(fontSize){
	// var stObj = (document.getElementById) ? document.getElementById('content_area') : document.all('content_area');
	if(checkobject(elementID)) {
		document.getElementById(elementID).style.fontSize = fontSize + '%';
	}
	else if(checkobject("global")) {
		document.getElementById("global").style.fontSize = fontSize + '%';
	}
	// document.getElementById(elementID).style.fontSize = fontSize + '%';
	// document.getElementById('left_content').style.fontsize = fontsize + '%';
	//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;
};
if (window.addEventListener){ //DOM method for binding an event
window.addEventListener("load", setUserOptions, false); }
else if (window.attachEvent){ //IE exclusive method for binding an event
window.attachEvent("onload", setUserOptions); }
// window.onload = setUserOptions;
function setUserOptions(){
	if(!prefsLoaded){
		cookie = readCookie("fontSize");
		currentFontSize = cookie ? cookie : defaultFontSize;
		setFontSize(currentFontSize);
		prefsLoaded = true;
	}
}
if (window.addEventListener){ //DOM method for binding an event
window.addEventListener("unload", saveSettings, false); }
else if (window.attachEvent){ //IE exclusive method for binding an event
window.attachEvent("onunload", saveSettings); 
}
// window.onunload = saveSettings;
function saveSettings()
{
  createCookie("fontSize", currentFontSize, 365);
}
function checkobject(obj) {
	if (document.getElementById(obj)) {
		return true; 
	} 
	else { 
		return false; 
	}
}