// JavaScript Document
var ckName = "hmh";
var fsCK = GetCookie( ckName );
var ckPath = "/"
var ckDays = 2;

function shoki() {
	if ( fsCK != null ){
  	document.getElementsByTagName("body")[0].style.fontSize = fsCK;
	}
}

function fontsize_bigger() {
	document.getElementsByTagName("body")[0].style.fontSize = "14px";
  SetCookie( ckName , "14px" );
}
function fontsize_normal() {
	document.getElementsByTagName("body")[0].style.fontSize = "12px";
  SetCookie( ckName , "12px" );
}
function fontsize_smaller() {
	document.getElementsByTagName("body")[0].style.fontSize = "12px";
  SetCookie( ckName , "12px" );
}
function SetCookie( name , value ){
  var dobj = new Date();
  dobj.setTime(dobj.getTime() + 24 * 60 * 60 * ckDays * 1000);
  var expiryDate = dobj.toGMTString();
  document.cookie = name + '=' + escape(value) + ';expires=' + expiryDate + ';path=' + ckPath;
}
function GetCookie (name){
  var arg  = name + "=";
  var alen = arg.length;
  var clen = document.cookie.length;
  var i = 0;
  while (i < clen){
    var j = i + alen;
    if (document.cookie.substring(i, j) == arg)
    return getCookieVal (j);
    i = document.cookie.indexOf(" ", i) + 1;
    if (i == 0) break;
  }
  return null;
}

function getCookieVal (offset){
  var endstr = document.cookie.indexOf (";", offset);
  if (endstr == -1)
  endstr = document.cookie.length;
  return unescape(document.cookie.substring(offset,endstr));
}


function DeleteCookie(name){
  if (GetCookie(name)){
    document.cookie = name + '=' +
    '; expires=Thu, 01-Jan-70 00:00:01 GMT;path='+ckPath;
  }
}