var font_size = 11;
var font_original = 11;
var min_font = 9;
var max_font = 24;
var obj;

window.onload = function(){
	obj = document.getElementById("cont");
	
	loadFontSize();
}

function setFont(){
  font_size = obj.style.fontSize;
  font_size = parseInt(font_size);
   font_size =font_original;
  obj.style.fontSize = font_size+'px';
 
  setCookie('cont',font_size,30);
}

function smalFont(){
  font_size = obj.style.fontSize;
  font_size = parseInt(font_size);
  if (font_size > min_font)  font_size = font_size - 1;
  obj.style.fontSize = font_size+'px';

  setCookie('cont',font_size,30);
}
function bigFont(){
  font_size = obj.style.fontSize;
  font_size = parseInt(font_size);
  if (font_size < max_font)  font_size = font_size + 1;
  obj.style.fontSize = font_size+'px';
  
  setCookie('cont',font_size,30);
}
function loadFontSize() {
	var tmp;
	
	if (tmp = parseInt(getCookie('cont'))){
	
	font_size = tmp;
  	obj.style.fontSize = font_size+'px';
   
   
	}else{
		setFont();
		}
}

function setCookie(name,value,days,path,domain,secure) {
	var expires, date;
	date = new Date();
	date.setTime( date.getTime() + (days*86400) );
		expires = date.toGMTString();
	document.cookie = name + "=" + escape(value) +
		((expires) ? "; expires=" + expires : "") +
		((path) ? "; path=" + path : "") +
		((domain) ? "; domain=" + domain : "") +
		((secure) ? "; secure" : "");
}

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