confsizer = {
       postfix : '_on'
};

function fontSetting() {
	var id = readCookie('fontsize');
	if(id){
		setFirst(id);
	}
	else setFirst("n");
	
	Event.observe($("font-normal"), 'click', setNormal, false);
	Event.observe($("font-large"), 'click', setLarge, false);
}

Event.observe(window, 'load', fontSetting, false);



function setFirst(id){
	if (id == "n") {
		var foot = $("footer-area");
		var contain = $("container");
		contain.setStyle({ 
			fontSize : "12px"
		});
		createCookie("fontsize", "n", 365);
	
		$("font-normal").src = $("font-normal").src.replace(/(\.gif|\.jpg|\.png)/, confsizer.postfix+"$1");
	}
	else {
		var foot = $("footer-area");
		var contain = $("container");
		contain.setStyle({ 
			fontSize : "14px"
		});
		createCookie("fontsize", "l", 365);
		
		$("font-large").src = $("font-large").src.replace(/(\.gif|\.jpg|\.png)/, confsizer.postfix+"$1");
	}
}


function changeSrcFunction(data){
       return function(){ this.src = data; }
}


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;
}

function setLarge(){
	var id = readCookie('fontsize');
	if (id != "l"){
		var foot = $("footer-area");
		var contain = $("container");
		contain.setStyle({ 
			fontSize : "14px"
		});
		createCookie("fontsize", "l", 365);
		
		$("font-large").src = $("font-large").src.replace(/(\.gif|\.jpg|\.png)/, confsizer.postfix+"$1");
		$("font-normal").src = $("font-normal").src.replace(confsizer.postfix, "");
	}
}


function setNormal(){
	var id = readCookie('fontsize');
	if (id != "n"){
		var foot = $("footer-area");
		var contain = $("container");
		contain.setStyle({ 
			fontSize : "12px"
		});
		createCookie("fontsize", "n", 365);
	
		$("font-large").src = $("font-large").src.replace(confsizer.postfix, "");
		$("font-normal").src = $("font-normal").src.replace(/(\.gif|\.jpg|\.png)/, confsizer.postfix+"$1");
	}
}