var prefsLoaded = false;
var defaultFontSize = 11;
var currentFontSize = defaultFontSize;

function revertStyles(){
	currentFontSize = defaultFontSize;
	changeFontSize(0);
}
function toggleColors(){
	if(currentStyle == "White"){
		setColor("Black");
	}else{
		setColor("White");
	}
}
function changeFontSize(sizeDifference){
	currentFontSize =  parseInt(sizeDifference);
	if(currentFontSize > 20){
		currentFontSize = 20;
	}else if(currentFontSize < 10){
		currentFontSize = 10;
	}
	setFontSize(currentFontSize);
};




function setFontSize(fontSize){
	//var num=20;
	var size="\""+fontSize+"px\"";
	document.getElementById("menu_sup").style.fontSize = eval(size);
	document.getElementById("buscador").style.fontSize = eval(size);
	document.getElementById("cabecera").style.fontSize = eval(size);
	document.getElementById("menu_lista").style.fontSize = eval(size);
	document.getElementById("parrafohome").style.fontSize = eval(size);	
	document.getElementById("foro").style.fontSize = eval(size);
};








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, 365);
}