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 var 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 eraseCookie(name) {

	 createCookie(name,"",-1);

}



function changeFontSize(size){

  var fsize;

  switch(size){

    case "2":

		    fsize = "24px";

		    break;

    case "3":

		    fsize = "30px";

      break;

    case "1":

		  default:

		    fsize = "12px";

  }

  document.body.style.fontSize = fsize;

 	// Value updated, need to update cookie

	 var FontSizeCookie = readCookie("FontSizeCookie");

	 if (FontSizeCookie){

	   eraseCookie("FontSizeCookie");

	 }

	 createCookie("FontSizeCookie",size,365);

}



function onloadFontSize(){

  var FontSizeCookie = readCookie("FontSizeCookie");

	 if (FontSizeCookie){

	   changeFontSize(FontSizeCookie);

	 }

	 else{

	   createCookie("FontSizeCookie","1",365);

	 }

}